Accutome a-scan plus User manual

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Table of Contents
Chapter 1: Introduction.................................................................1
Accutome A-Scan Plus Overview.............................................................1
Features..............................................................................................................2
Measurements........................................................................................................2
IOL Calculations....................................................................................................3
Components...........................................................................................................3
Optional Components............................................................................................4
About this Manual...........................................................................................4
Chapter 2: Safety..................................................................................6
Safety Information..........................................................................................6
Safety Issues to Consider When Using the Accutome A-Scan Plus.....................6
Indications for use.................................................................................................6
Symbols Denitions for the Accutome.................................................................7
Safety Precautions...........................................................................................8
Sterilization...........................................................................................................8
Disinfection and Cleaning.....................................................................................9
Electrical Hazard and Safety...............................................................................10
Avoiding Equipment Damage.............................................................................10
Avoiding Electromagnetic and Other Interference..............................................11
ALARA Principle................................................................................................11
Chapter 3: Getting Started.............................................................12
Assembling the Accutome A-Scan Plus.................................................12
What you need....................................................................................................12
Probe...................................................................................................................13
Footswitch...........................................................................................................13
Battery Specication and Installation.................................................................13
Placing the Accutome A-Scan Plus.....................................................................14
Quick-Close Kickstand........................................................................................14
Mounting.............................................................................................................15
Connecting the Components................................................................................15
Connecting the Footswitch..................................................................................16
Connecting the Power..........................................................................................16
Connecting the Ethernet Connection...................................................................17

Connecting the USB Keyboard and USB disk...................................................17
Connecting the RS232 Connector.......................................................................17
Connecting the Probe...........................................................................................18
Probe Setup......................................................................................................19
Accutome Ultrasonic Probe Kit..........................................................................20
Accutome Probe with Goldman Tonometer Adapter..........................................21
Accutome Probe with Handle Extension.............................................................22
Basic Operation..............................................................................................24
How to Power On the Accutome A-Scan Plus....................................................24
How to Adjust the Contrast.................................................................................25
Using the Test Block............................................................................................26
Preparation of Patient for Examination...............................................................27
How to Start a New Patient.................................................................................27
How to Enter Text without a Keyboard...............................................................31
Screen Keyboard Features...................................................................................32
Entering a Patient with the Screen Keyboard......................................................33
How to Take a Measurement...............................................................................34
How to Perform a Calculation.............................................................................36
How to Print a Records........................................................................................41
How to Save Patient Records..............................................................................41
Chapter 4: How to Use the Buttons and Screens..........43
Overview..............................................................................................................43
Accutome A-Scan Plus Buttons................................................................44
Dedicated Buttons................................................................................................44
Measure Button....................................................................................................45
Patient Record Button.........................................................................................45
Calculate..............................................................................................................45
Preferences...........................................................................................................45
Print.....................................................................................................................46
Check or Afrmative ( √ )...................................................................................46
Negative or Delete (X)........................................................................................46
Soft Menu Buttons...............................................................................................46
Buttons that Toggle between Two Selections......................................................47
Buttons that Display Other Screens or Soft Menus............................................47
Accutome A-Scan Plus Knob.............................................................................47
How the Knob Works..........................................................................................47
Screens...............................................................................................................47
What the Screen Displays....................................................................................48

Types of Information...................................................................... ....................48
Soft Menus..........................................................................................................48
Tips.....................................................................................................................48
Sounds..................................................................................................................48
Error Messages....................................................................................................49
Moving between Screens....................................................................................49
Screen Hierarchy..................................................................................................49
High Level Screen Buttons..................................................................................50
Top Level Screens................................................................................................50
Associated Sub-Level Screens............................................................................50
From the Measure Screen....................................................................................50
From the Patient Records Screen........................................................................51
From the Preferences Screen...............................................................................51
How Buttons, Screens and Knob Work Together................................................51
Changing Fields and Table Cells.........................................................................51
Changing Fields and Table Cells.........................................................................51
Active Area.........................................................................................................52
Text Entry.............................................................................................................52
Selecting a New Active Area..............................................................................52
Changing Fields in the Active Area....................................................................52
Pre-entered Fields................................................................................................52
Fields Requiring Information..............................................................................53
Numeric Fields....................................................................................................53
Keyboard Shortcuts.......................................................................................53
Using the Footswitch....................................................................................55
Setting Up the Accutome A-Scan Plus...................................................56
Chapter 5: Preferences...................................................................56
How to Access Preferences.........................................................................57
Top Level of Preferences.....................................................................................58
How to Add a New Eye Type....................................................................59
Adding a New Lens Material..............................................................................60
Assigning a Velocity to the New Lens Material..................................................62
Adding the New Eye Type Information..............................................................63
Eye Type Screen Menu Selections...........................................................69
Reset Field to Factory..........................................................................................69
Reset All to Factory.............................................................................................72
More Settings..................................................................................................74
Setup Screen Fields.............................................................................................74

Setup Screen Soft Menu.....................................................................................75
How to Set the Printer.........................................................................................76
How to Set the Print Title....................................................................................89
How to Select Automatic or Manual Network Address......................................93
How to Adjust the Contrast................................................................................96
How to Set the Default Patient Eye Type.........................................................100
How to Set the Default ID................................................................................103
How to Set the Default Gain............................................................................106
How to Set the Target Refraction.....................................................................108
How to Set the K Index....................................................................................111
How to Set the IOL Step...................................................................................114
How to Activate the Network Folder................................................................118
Congure Network Folder................................................................................119
Testing Network Connection on the A-Scan Plus.......................................... ..123
Connect to the PC folder................................................................................ ..123
Troubleshooting the problems...........................................................................123
How to Adjust the Date and Time.....................................................................124
How to Set the Auto Mode ...............................................................................127
Sound On/Sound Off........................................................................................133
Restart On/Restart Off......................................................................................133
Scr Save On/Scr Save Off.................................................................................133
Save and Restore Factory Default Gates and Threshold...................................134
About This Unit................................................................................................134
Overview............................................................................................................136
Chapter 6: Performing Measurements................................136
Measure Screen.............................................................................................137
Information Displayed on the Measure Screen.................................................138
Soft Menu Selections.........................................................................................138
Starting a New Patient.......................................................................................139
How to Set the Eye Type..........................................................................139
Eye Types..........................................................................................................139
Eye Type Materials and Velocities....................................................................140
Table 6-1 Eye Types..........................................................................................140
Table 6-2 Lens Materials and Velocities...........................................................140
Table 6-3 Anterior/Vitrous Materials and Velocities.........................................140
Setting the Eye Type.........................................................................................141
Probe Application Methods......................................................................143
Immersion..........................................................................................................143
Contact...............................................................................................................144

Capture Modes.............................................................................................144
Auto Mode........................................................................................................144
Manual Mode....................................................................................................145
How to Capture a Waveform....................................................................145
Using the Footswitch.........................................................................................145
Using the Running/Frozen Button.....................................................................145
Using the Measure Button.................................................................................146
How to Select a Measurement.................................................................146
Selecting a Measurement with the Knob..........................................................146
Selecting a Measurement Using Waveform Review Menu..............................147
Selecting a Measurement with the Footswitch..................................................148
How to Delete a Measurement................................................................149
Deleting a Measurement with X Button or Keyboard......................................149
Deleting a Measurement with the Footswitch...................................................149
How to Adjust Gates/Threshold..............................................................149
Available Gates/Threshold.................................................................................150
Selecting Gates/Threshold.................................................................................151
Waveform Review Menu..................................................................................152
How to Adjust the Cornea Gate........................................................................152
How to Adjust the Anterior Lens Gate..............................................................153
How to Adjust the Posterior Lens Gate............................................................155
How to Adjust the Retina Gate.........................................................................156
How to Apply Gate Adjustments to All Wavefor..............................................158
How to Adjust the Gain.............................................................................159
How to Use Zoom.............................................................................................161
How to Scroll................................................................................................162
Switching Eyes............................................................................................164
Customize Eye Type...................................................................................164
Overview............................................................................................................165
Patient Customization........................................................................................165
Chapter 7: Customizing Eye Types.......................................165
Customize Eye Type Screen.....................................................................166
Customize Fields and Menu Selections.............................................................166
OD.....................................................................................................................166
OS.....................................................................................................................166
Eye Type Table...................................................................................................166
AC.....................................................................................................................166
Lens...................................................................................................................166

VC.....................................................................................................................166
How to Customize an Eye Type.............................................................167
Overview............................................................................................................174
Calculating the Lens.........................................................................................174
Calculation after Corneal Refractive Surgery ..................................................174
Chapter 8: Performing Calculations.....................................174
Calculate IOL Screen..................................................................................176
Selecting an IOL Group.....................................................................................177
Selecting a Formula...........................................................................................177
Entering an ACD Value with the Haigis Formula.............................................177
Changing the AXL Value...................................................................................178
Selecting a Measurement...................................................................................178
Entering an AXL Value......................................................................................179
Entering the K1, K2 Values...............................................................................179
Entering the K1, K2 Values...............................................................................181
Calculation Results............................................................................................181
Formula Compare Feature ...............................................................................182
Switching Between OD/OS..............................................................................183
Calculating IOL Power After Corneal Refractive Surgery...........184
Double K Method..............................................................................................184
Determining Corneal Power after Refractive Surgery......................................185
Post Rx Surg IOL Calculation Steps ................................................................185
Changing Rx Surg Field to Yes.........................................................................186
Clinical History Method....................................................................................187
Clinical History Fields.......................................................................................187
Contact Lens Method.........................................................................................188
Shammas Clinical Method ...............................................................................189
Calculation Results............................................................................................190
Switching Between OD/OS..............................................................................190
Chapter 9: Setting Up IOL Groups................................191
How are IOL Groups Used...............................................................................191
How to Set Up an IOL Group..................................................................191
IOL Calculation Groups Screen........................................................................192
Entering IOL Group Names..............................................................................193
Entering the Group’s Lenses.............................................................................194

Chapter 10: Personalizing Lens Constants.....................200
Overview...........................................................................................................200
Personalizing Lens Constants...........................................................................200
How to Personalize Constants................................................................201
Accessing the Personalize IOLs Screen...........................................................201
Personalize IOLs Screen...................................................................................202
Personalize IOLs Screen Soft Menus...............................................................203
Selecting an IOL Group and Lens....................................................................203
Next IOL/Group...............................................................................................203
Selecting IOL Group with the Knob................................................................204
Entering Postoperative Results.........................................................................204
Pasting Patient Information..............................................................................205
Manually Entering Patient Information ..........................................................206
Entering Remaining Postoperative Results......................................................207
Deleting Postoperative Results.........................................................................207
Deleting Current Postoperative Result.............................................................207
Deleting All Postoperative Results...................................................................208
How to View Individual Results for a Formula................................................208
How to Sort Postoperative Results...................................................................208
How to Update IOL Constants..........................................................................209
Update IOL Constants Screen...........................................................................210
Selecting an IOL Group and Lens....................................................................211
Chapter 11: Storing and Recalling Records...................213
How to Recall a Record....................................................................................215
How to Adjust Parameters on Saved Records..................................................217
How to Update Calculations.............................................................................217
How to Sort Patient Records...................................................................218
Chapter 12: Printing Records....................................................219
How to Print a Record...............................................................................219
Screen Printout Formats....................................................................................219
How to Select the Right Printout Format.........................................................220
Sample Printouts...............................................................................................220
How to Batch Print............................................................................................222
Required Printer................................................................................................225

Chapter 13: Maintenance..............................................................226
General Maintenance........................................................................................226
Safety Inspections.............................................................................................226
Visual Inspection...............................................................................................226
Ultrasound Inspection.......................................................................................226
Calibration of Accutome A-Scan Plus..............................................................227
Battery Disposal...........................................................................................227
Instructions for Disposal...................................................................................227
Disposal in Europe............................................................................................227
Disposal in US..................................................................................................228
Chapter 14: Specications...........................................................230
Overview............................................................................................................230
Physical Specications......................................................................................230
Table 14-1 Accutome A-Scan Plus Physical Specications.............................230
Table 14-2 Accutome A-Scan Plus Physical Specications.............................231
Environmental Specications ................................................................231
Table 14-3 Environmental Specications.........................................................232
Measurement Accuracy.....................................................................................232
Table 14-4 Measurement Accuracy...................................................................232
Operating Modes.........................................................................................233
Table 14-5 Operating Mode(s)..........................................................................233
Formula References....................................................................................234
Table 14-6 Formula References........................................................................234
Storage/Range Specications..................................................................235
Table 14-7 Data Specications.........................................................................235
Table 14-8 Data Specications.........................................................................236
Acoustic Output...........................................................................................237
Table 14-9 Acoustic Output Reporting Table for Track 1................................237
Non-Autoscanning Mode.................................................................................237
Table 14-10 Acoustic Output Reporting Table for Track 1..............................238
Non-Autoscanning Mode.................................................................................238
EMC Compliance Information................................................................238
Table 14-11 electromagnetic emissions............................................................240
Table 14-12 electromagnetic immunity ..........................................................240
Table 14-12 electromagnetic immunity.............................................................241
Table 14-13 electromagnetic immunity.............................................................242
Table 14-14 Recommended separation distances ...........................................244

Chapter 15: Warranty and Repairs.........................................245
Warranty............................................................................................................245
Product Returns............................................................................................246
Service and Repair............................................................................................246
All Other Returns..............................................................................................246
Non-Returnable Merchandise...........................................................................246
Replacement Parts.......................................................................................247
Table 15-1 Accutome Replacement Parts..........................................................247
Documentation...................................................................................................247
Network Addendum...........................................................................................248

List of Figures
Figure 1-1 Accutome A-Scan Plus........................................................................1
Figure 3-1 Accutome A-Scan Plus Components.................................................12
Figure 3-2 Closed Kickstand...............................................................................14
Figure 3-3 Open Kickstand..................................................................................15
Figure 3-4 Component Connectors.....................................................................16
Figure 3-5 Probe Connector.................................................................................18
Figure 3-6 Probe Connected................................................................................19
Figure 3-7 Accutome Ultrasonic Probe Kit........................................................20
Figure 3-8 Accutome Probe.................................................................................20
Figure 3-9 Probe Setup with Immersion Shell....................................................21
Figure 3-10 Probe with Goldman Tonometer Adapter........................................21
Figure 3-11 Inserting the Probe into the Handle Extension................................22
Figure 3-12 Probe with Handle Extension and Insertion Tool...........................23
Figure 3-13 Probe with Handle Extension..........................................................23
Figure 3-14 Turning on the Accutome A-Scan Plus...........................................24
Figure 3-15 Measure Screen Displayed.............................................................25
Figure 3-16 Accutome A-Scan Plus Test Block..................................................26
Figure 3-17 Measure Screen, Main Menu..........................................................27
Figure 3-18 Patient Information Field................................................................28
Figure 3-19 Patient Information Field Opened..................................................29
Figure 3-20 Enter Patient’s Last Name..............................................................29
Figure 3-21 Enter Patient Information...............................................................30
Figure 3-22 Screen Keyboard.............................................................................31
Figure 3-23 Measurement Fields Selected..........................................................34
Figure 3-24 Measure Screen Displayed.............................................................36
Figure 3-25 Calculate IOL Screen.......................................................................37
Figure 3-26 ACD Field Selected........................................................................38
Figure 3-27 K1, K2 Values.................................................................................39
Figure 3-28 Calculation Completed....................................................................40
Figure 3-29 Patient Record Storage ...................................................................42
Figure 3-30 Patient Record Stored......................................................................42
Figure 4-1 Accutome A-Scan Plus Buttons.........................................................44
Figure 4-2 Accutome A-Scan Plus Screen Hierarchy..........................................50
Figure 5-1 Preferences Button.............................................................................57
Figure 5-2 Eye Types Screen...............................................................................58
Figure 5-3 Selecting the Lens Materials Table....................................................60
Figure 5-4 Selecting a Cell to Enter New Lens Material....................................61
Figure 5-5 Entering the Name for New Lens Material.......................................62
Figure 5-6 Adding New Material Velocity..........................................................63

Figure 5-7 Selecting the Eye Type Name Cell...................................................64
Figure 5-8 Adding the New Eye Type Name ....................................................64
Figure 5-9 Activating the Area to Select New Lens Material............................65
Figure 5-10 Lens Material Selected...................................................................66
Figure 5-11 Lens Thickness Entered...................................................................67
Figure 5-12 Anterior Chamber Material Selected...............................................68
Figure 5-13 Vitreous Chamber Material Selected...............................................69
Figure 5-14 Non-Factory Field...........................................................................70
Figure 5-15 Restore Selected Field Prompt........................................................71
Figure 5-16 Selected Field Restored...................................................................72
Figure 5-17 Non-Factory Fields Displayed........................................................73
Figure 5-18 Restore All Fields Prompt...............................................................74
Figure 5-19 More Settings - Setup Screen..........................................................75
Figure 5-20 Printer Field Selected......................................................................76
Figure 5-21 Printer Field Open..........................................................................77
Figure 5-22 Selecting the Printer.......................................................................78
Figure 5-23 Printer Selected...............................................................................79
Figure 5-24 Select Printer...................................................................................80
Figure 5-25 Activate the Printer Field................................................................81
Figure 5-26 Printer Selection “None”.................................................................82
Figure 5-27 New Patient Selected.....................................................................83
Figure 5-28 Update Selected...............................................................................84
Figure 5-29 Are You Sure?................................................................................85
Figure 5-30 Driver Update Complete................................................................86
Figure 5-31 Select Printer Field.........................................................................87
Figure 5-32 Selecting Custom Print Drives........................................................88
Figure 5-33 Custom Print Drivers Selected.......................................................89
Figure 5-34 Print Title Field Selected................................................................90
Figure 5-35 Print Title Field Activated..............................................................91
Figure 5-36 Entering the Print Title ...................................................................92
Figure 5-37 Print Title Added............................................................................93
Figure 5-38 Selecting Automatic Network Address..........................................94
Figure 5-39 Contrast Field Selected ...................................................................97
Figure 5-40 Contrast Field Activated..................................................................98
Figure 5-41 Adjusting the Contrast.....................................................................99
Figure 5-42 Contrast Adjusted..........................................................................100
Figure 5-43 Default Eye Type Field Selected ..................................................101
Figure 5-44 Default Eye Type Field Activated.................................................101
Figure 5-45 New Default Eye Type Selected ..................................................102
Figure 5-46 Default Eye Type Changed............................................................103
Figure 5-48 Default ID Field Activated............................................................105
Figure 5-49 Entering the Default ID.................................................................105

Figure 5-50 Default ID Added...........................................................................106
Figure 5-51 Default Gain Field Selected...........................................................107
Figure 5-52 Default Gain Field Changed..........................................................108
Figure 5-53 Target Field Selected......................................................................109
Figure 5-54 Target Field Activated....................................................................109
Figure 5-55 Adjusting the Target......................................................................110
Figure 5-56 Target Adjusted..............................................................................111
Figure 5-57 K Index Field Selected...................................................................112
Figure 5-58 K Index Field Activated.................................................................113
Figure 5-59 Adjusting the K Index....................................................................113
Figure 5-60 K Index Field Adjusted .................................................................114
Figure 5-61 IOL Step Field Selected.................................................................115
Figure 5-62 IOL Step Field Activated...............................................................115
Figure 5-63 Adjusting the IOL Step.................................................................116
Figure 5-64 IOL Step Adjusted.........................................................................117
Figure 5-65 Selecting Network Folder On/Off................................................118
Figure 5-66 Congure Network Folder.............................................................119
Figure 5-67 Day Field Selected.........................................................................124
Figure 5-68 Day Field Activated.......................................................................125
Figure 5-69 Adjusting the Day..........................................................................126
Figure 5-70 Day Adjusted ...............................................................................127
Figure 5-71 Auto Mode Sclera Selected............................................................129
Figure 5-72 Auto Mode Sclera Field Activated................................................129
Figure 5-73 Changing the Auto Mode - Turning On Sclera.............................130
Figure 5-74 Auto Mode - “Sclera” On.............................................................131
Figure 5-75 Auto Mode - “Stable” Selected......................................................132
Figure 5-76 Auto Mode Dened by “Stable” Measurement.............................132
Figure 5-77 About This Unit Screen................................................................135
Figure 6-1 Measure Screen Displaying Current Settings..................................137
Figure 6-2 Eye Type Selected............................................................................141
Figure 6-3 Eye Type Active...............................................................................142
Figure 6-4 Eye Type Changed...........................................................................143
Figure 6-5 Measurement Selected.....................................................................147
Figure 6-6 Measurement Activated with Waveform Review Menu.................148
Figure 6-7 Current Measurement Waveform Selected ....................................151
Figure 6-8 Waveform Review Menu Activated.................................................152
Figure 6-9 Cornea Gate Selected.......................................................................153
Figure 6-10 Anterior Lens Gate Selected.........................................................154
Figure 6-11 Posterior Lens Gate Selected........................................................156
Figure 6-12 Retina Gate Selected......................................................................157
Figure 6-13 Threshold Gate Selected................................................................158

Figure 6-14 Gain Selected ...............................................................................159
Figure 6-15 Gain Field Changed.......................................................................160
Figure 6-16 Zoom Selected...............................................................................161
Figure 6-17 Zoom Changed...............................................................................162
Figure 6-18 Scroll Selected..............................................................................163
Figure 6-19 Measurement Scrolling Changed.................................................164
Figure 7-1 Customize Eye Type Screen............................................................167
Figure 7-2 OS Materials Table Selected............................................................168
Figure 7-3 OS Materials Table Activated..........................................................169
Figure 7-4 Changing VC Material.....................................................................170
Figure 7-5 VC Material Cell Changed..............................................................171
Figure 7-6 Changing Velocity Field..................................................................172
Figure 7-7 OS Eye Type Customized................................................................173
Figure 8-1 Calculate Button..............................................................................175
Figure 8-2 Calculation Fields............................................................................176
Figure 8-3 Calculate IOL Screen - All Fields Entered......................................182
Figure 8-4 Compare On Selected.....................................................................183
Figure 8-5 Post Rx Surgery Field (Rx Surg) Selected......................................186
Figure 8-6 Post Rx Surgery Calculation Activated - Clinical History..............187
Figure 8-7 Post Rx Surgery Calculation with Contact Lens Method...............188
Figure 8-8 Post Rx Surgery Calculation with Shammas Clinical Method .......189
Figure 9-1 Select IOL Groups...........................................................................192
Figure 9-2 IOL Groups Screen..........................................................................193
Figure 9-3 Entering the IOL Group Name........................................................194
Figure 9-4 Entering the IOL Description..........................................................195
Figure 9-5 Selecting the A-Constant Field........................................................196
Figure 9-6 Entering the IOL Constant...............................................................197
Figure 9-7 First Lens Entered for Group 1.......................................................198
Figure 9-8 First IOL Group Complete...............................................................199
Figure 10-1 Calculate IOL Screen - IOL Groups Selection..............................201
Figure 10-2 Personalize IOLs Screen................................................................202
Figure 10-3 Update IOL Constants Screen......................................................210
Figure 11-1 Patient Record Screen...................................................................214
Figure 11-2 Patient Record Stored...................................................................215
Figure 11-3 Recalling a Patient Record............................................................216
Figure 11-4 Recalled Patient Record................................................................217
Figure 12-1 Measurement Printout...................................................................220
Figure 12-2 Calculation Printout and Patient Record Screen..........................221
Figure 12-3 Saved Patient Record Screen........................................................222
Figure 12-4 Print Menu Screen........................................................................223
Figure 12-5 Saved Patient Records - Select for Batch Print............................224

All Accutome A-Scan units are manufactured by Accutome Ultrasound at:
3222 Phoenixville Pike
Malvern, PA 19355
USA

Introduction
1
1Introduction
The Accutome A-Scan Plus pictured below has all the features that make it easy
to obtain extreme accuracy and improved patient outcomes.
Accutome A-Scan Plus Overview
Figure 1-1 Accutome A-Scan Plus

Accutome A-Scan Plus User’s Guide
2
The Accutome A-scan Plus is designed for easy access to all screens and functions.
The advanced User Input Knob provides unsurpassed ease of use and the
straightforward Graphical User Interface guides you through every operation.
What you can’t see on the surface is also important. Industry-leading signal
acquisition and processing helps you assure accurate measurements. Reliable
design and efcient manufacturing provide scal value. Upgradeable software
protects your investment. The Accutome A-Scan Plus lets you accomplish
even the complex simply.
The A-Scan provides the following general features:
• Large 7.5 inch high resolution LCD screen with intuitive User Interface
• Rotary User Input knob and dedicated tactile buttons
• External, universal input, worldwide power supply
• Desktop, slit lamp, or wall mountable
• Provides a variety of printouts
• 1.9” thick, portable
Features
Measurements
The accuracy of the Accutome A-Scan Plus measurement is provided by the
following:
• High-resolution, real-time waveform display with up to 8X zoom pinpoints
tissue boundaries
• High-speed digitalization acquires over 4000 points per waveform
• Continuous display of Axial Length, ACD, Lens Thickness, and Vitreous
dimensions
• Audible feedback of contact, signal quality, and capture
• Immersion mode yields improved accuracy - Contact mode also supported
• Automatically or Manually capture up to 5 waveforms for each eye
• Adjustable Gain, Time Gates, and Amplitude Thresholds
• Modify all waveform parameters using real-time or frozen waveforms
• On-the-Fly customization makes unique patients a breeze

Introduction
3
• Predened Eye Types and Velocities handle most situations such as phakic,
dense cataract, three pseudo-phakic, aphakic, and even silicone oil lled
eyes. All velocities are fully adjustable.
• Custom Eye Types and Material Velocities can be created to handle individual
preferences, special pathologies, or future trends
• Highly sensitive 10MHz composite Broadband probe features xation and
multiple mounting options
IOL Calculations
The Accutome A-Scan Plus is also a leader in IOL Calculations and provides
the following:
• Modern formulas including Hoffer Q, Holladay, SRK/T, and Haigis
• Compare results of all formulas simultaneously on a single screen for
selected lenses
• Instantly calculates emmetropic and targeted ametropoic IOL powers for
dozens of lenses, viewed three at a time, using the average of selected
waveforms, a single waveform, or manually entered data
• Conveniently group lenses by favorite designation such as surgeon, user,
type, manufacturer, etc.
• Personalization of IOL Constants is easy and straightforward, encouraging
improved patient outcomes
• Maintains individual IOL Constants for each formula. Clearly identies
which IOL constant is used with the selected formula
• IOL Calculation for Post Refractive Surgery Patients
Components
The components that are standard with each Accutome A-Scan Plus instrument are:
• Ultrasonic probe
• Power Supply
• Footswitch
• Keyboard
Features

Accutome A-Scan Plus User’s Guide
4
Optional Components
There are also several optional components which further simplify the use of
the Accutome A-Scan:
• External Printer
• Immersion Shell
• Mounting Options
About this Manual
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
Safety
Getting Started
How to Use the
Accutome Buttons and
Screens
Accutome A-Scan
Preferences
Performing
Measurements
Customizing Eye Types
Summarizes safety precautions,
warnings, symbols, and terms.
Provides assembly instructions,
overview of Accutome A-Scan Plus
basic operation.
Describes the interface and how to
use all the buttons and screens.
Provides instructions on how to set
up eye types and system operational
functions.
Provides detailed instructions on
how to perform A-Scan
measurements.
Describes how to customize an eye
type for an individual patient.