Topcon RM-8900 User manual

INSTRUCTION MANUAL
AUTO REFRACTOMETER
RM-8900
AUTO KERATO-REFRACTOMETER
KR-8900

1
INTRODUCTION
Thank you for purchasing the Auto Refractometer RM-8900, Auto Kerato-Refractometer KR-8900.
This instrument is used to measure the spherical refractive-power,cylindrical refractive power, the
direction of astigmatic axis, the radius of curvature, the direction of principal meridian and the cor-
neal refractory power.
This instrument features the following:
• Measures the refractory power of eye and the corneal curvature with simple operations.
• The minimum measurable pupil diameter is now smaller and thus the measuring range is
extended.
• The auto start function facilitates quick measurements under the optimal condition.
This Instruction Manual covers an overview of the basic operation, toroubleshooting, checking,
maintenance and cleaning of the Auto Refractometer RM-8900 and Auto Kerato-Refractometer
KR-8900.
To get the best use of the instrument, read Safety Displays and Safety Cautions.
Keep this Manual at hand for future reference.
PRECAUTIONS
• Since this product is a precision instrument, always use and keep it in a normally controlled liv-
ing environment, within a temperature range of 10-40°C, humidity levels between 30-90% and
an atmospheric pressure range of 700hPa-1,060hPa.
The instrument should also be placed away from direct sunlight.
• To ensure smooth operation, install the instrument on a level floor free of vibrations. Also, do
not put things on the instrument.
• Connect all cables properly before using.
• Use the power at a rated voltage.
• When not in use, switch off the power source and apply the measuring lens cap and dust cover.
• For accurate measurement results, take care to keep the examination window clean and free of
fingerprints, spots and dust.
This symbol is applicable for EU member countries only.
To avoid potential damage to the environment and possibly human health, this
instrument should be disposed of (i) for EU member countries - in accordance with
WEEE (Directive on Waste Electrical and Electronic Equipment), or (ii) for all other

countries, in accordance with local disposal and recycling laws.

2
PRECAUTIONS
BASIC INSTRUCTIONS
• To avoid electrical shock, do not open the instrument. Refer all servicing to only qualified personnel.
• Electrical shock may cause burns or possible fire. Turn the main power switch OFF and
UNPLUG the power cord before replacing fuses. Replace only with fuses of the correct rating.
• To avoid potential injury during operation, do not touch the patient’s eyes or nose with the instrument.
WORKING ENVIRONMENT
Temperature: 10°C-40°C
Humidity: 30-90% (without dew)
Atmospheric Pressure: 700hPa-1,060hPa
STORAGE, USAGE PERIOD AND OTHERS
1. ENVIRONMENTAL CONDITIONS FOR INSTALLATION (WITHOUT PACKAGE)
Temperature: 10 °C-40 °C
Humidity: 10%~95% (without dew)
Air Pressure: 700hPa-1,060hPa
THIS INSTRUMENT DOES NOT MEETTHE TEMPERATURE REQUIREMENTS OF ISO15004-1 FOR STORAGE.
DO NOT STORE THIS INSTRUMENT IN CONDITIONS WHERE THE TEMPERATURE MAY RISE ABOVE 40°C OR FALL
BELOW 10°C.
2.WHEN STRING THE INSTRUMENTS, ENSURE THAT THE FOLLOWING CONDITIONS ARE MET:
(1) The instrument should not be splashed with water.
(2) Store the instrument where air pressure, temperature, humidity, ventilation, sunlight,dust,
salty/sulfurous air, etc. do not give any negative side water.
(3) Do not store or transport the instrument on a slope or uneven surface or in an area where
it is subject to vibrations or instability.
(4) Do not store the instrument where chemicals are stored or gas is generated.
3.USAGE PERIOD
8 years from delivery providing regular maintenance is performed (according to the self-cer-
tification [Topcon data])
ENVIRONMENTAL CONDITIONS FOR PACKING IN TRANSPORTATION
Temperature: -40°C~70°C
Humidity: 10%-95%
MAINTENANCE AND CHECKS
1.Regularly maintain and check all equipment and parts.
2.Before using equipment that has not been used in a while, be sure to confirm normal and
safe operation beforehand attempting any patient measurements.
3.Keep the examination window free from finger prints and dust.
4.When the instrument is not in use, protect the instrument by covering it with the dust cover.
5.When the examination window becomes dirty or soiled, clean it according to the instructions
listed in “CLEANING THE INSTRUMENT” on page 83 of the Instruction Manual.

3
SAFETY DISPLAYS
In order to encourage the safe use of the instrument and to avoid danger to the operator and oth-
ers as well as damage to properties, warnings are described in the Instruction Manual and marked
on the instrument body.
We suggest you thoroughly understand the meaning of the following displays/icons and Safety
Cautions, as well as read the Manual, and strictly observe the instructions.
DISPLAYS
DISPLAY MEANING
Improper handling or ignoring this display may lead to
the danger of death or serious injury.
Improper handling or ignoring this display may cause
personal injury or physical damage.
• Injury means hurt, burn, electric shock, etc.
• Physical damage means extensive damage that may involve building, peripheral equip-
ment and furniture.
ICON
ICON MEANING
This icon indicates an action to be avoided.
Specific contents are shown with words or illustration
close to the icon.
This icon indicates Mandatory Action.
Specific contents are shown with words or illustration
close to the icon.
This icon indicates Hazard Alerting (Warning).
Specific content are shown with words or illustration
close to the icon.
WARNING
CAUTION

4
SAFETY CAUTIONS
.
Icon Meaning Page
To avoid electric shocks, do not attempt overhauling, rebuilding or
repairs. Ask your dealer for repair. 74
To avoid electric shocks, do not remove covers from bottom and top
surfaces, monitor, measuring unit, etc. 74
To prevent shock hazard, do not allow water or other foreign matter
to enter the instrument. ––
To avoid fire and electric shocks in case of tumbling, do not place a
cup or vessel containing water/fluid on the instrument. ––
To avoid electric shocks, do not insert objects metals through vent
holes or gaps or contain them inside the machine body. ––
To avoid electric shocks during fuse change, be sure to unplug the
power cable before removing the fuse lid. Also, do not plug the
power cable leaving the fuse box open. 86
Always use the attached fuse (3A 250V). Using any other type may
cause troubles and fire. 86
Should any anomaly, such as smoke, occur, immediately switch
OFF the power source and unplug the powr cable. Continued use
ignoring the condition may cause fire. Ask your dealer for repair. ––
WARNING : Handling the cord on this product or cords associated with accessories sold
with this product, will expose you to lead, a chemical known to the State of California to
cause birth detects or other reproductive harm. Wash hands after handling
This Product Contains Mercury in the backlighting of the LCD display. Prior to disposal
remove of otherwise ensure that this is disposed of in accordance with Local, State and
Federal Laws. This information is applicable in U.S.A only.
This Product Contains a CR Lithium Battery which contains Perchlorate Material-special han-
dling may apply.
See http://www.dtsc.ca.gov/hazardouswaste/perchlorate/
Note; This is applicable to California. U.S.A only.
WARNINGS

5
SAFETY CAUTIONS
Icon Meaning Page
Before moving the instrument, fasten the clamping knob at the bot-
tom surface to stop movements. Negligence of this may cause
injury by falling parts. 21
When moving the instrument, be sure to hold it at the bottom sur-
face with two persons. Carrying by one person may cause a back-
ache or injury by falling parts. Also, holding ares other than the
bottom surface may cause pinching fingers between parts and
injury by falling parts as well as damage to the instrument.
21
To prevent injury due to tumbling of the instrument body and falling
parts, avoid a slope and unstable floor for installation. 21
To avoid electric shocks, do not handle the power plug with
wet fingers. 22
To avoid injury, do not insert fingers under the chinrest.
*Be sure to instruct the patient about this. 55
This instrument has been tested (with 100/120/230V) and found to
comply with IEC60601-1-2:Ed.2.1:2004.
This instrument radiates radio frequency energy within standard
and may affect other devices in the vicinity.
If you have discovered that turning on/off the instrument affects
other devices, we recommend you change its position, keep a
proper distance from other devices, or plug it into a different outlet.
Please consult your authorized dealer if you have any additional
questions.
––
CAUTIONS

6
USAGE AND MAINTENANCE
USER MAINTENANCE
To maintain the safety and performance of the equipment, never attempt to do maintenance
and except for the items specified here. For details, follow the instructions.
FUSE CHANGE:
For details, See “FUSE CHANGE” on page 86.
CLEANING OF EXAMINATION WINDOW:
For details, See “CLEANING THE INSTRUMENT” on page 83.
ESCAPE CLAUSES
Usage:
• Since the Auto Refractometer is an electric equipment for medical purposes, the operation
should be supervised by a well-experienced doctor.
• TOPCON shall not take any responsibility for damage due to fire, earthquakes, actions by
third persons and other accidents, or the negligence and misuse of the user and use under
unusual conditions.
• TOPCON shall not take any responsibility for damage derived from the use or unavailability
of this equipment, such as a loss of business profit and suspension of business.
• TOPCON shall not take any responsibility for damage caused by usage other than that
described in this Instruction Manual.
• TOPCON shall not take any responsibility for the result of diagnosis using this equipment.

7
WARNING INDICATIONS AND POSITIONS
To secure safety, this equipment provides warnings.
Correctly use the equipment following these warning instructions. If any of the following mark-
ing labels are missing, please contact your dealer or TOPCON to the address stated on
the back cover.
CAUTION
• To avoid potential injury during operation,
do not touch the patient’s eyes or nose
with the instrument.
WARNING
• Electrical shock may cause burns or possible fire.
Turn the main power switch OFF and UNPLUG the
power cord before replacing fuses. Replace only
with fuses of the correct rating.
WARNING
• To avoid electrical shock, do not open the
instrument. Refer all servicing to only quali-
fied personnel.

8
CONTENTS
INTRODUCTION ................................................................................................1
PRECAUTIONS ..................................................................................................2
WORKING ENVIRONMENT ...............................................................................2
STORAGE, USAGE PERIOD AND OTHERS ....................................................2
ENVIRONMENTAL CONDITIONS FOR PACKING IN TRANSPORTATION .....2
SAFETY DISPLAYS........................................................................................... 3
SAFETY CAUTIONS ..........................................................................................4
USAGE AND MAINTENANCE ...........................................................................6
USER MAINTENANCE .......................................................................................6
ESCAPE CLAUSES ...........................................................................................6
WARNING INDICATIONS AND POSITIONS .....................................................7
COMPONENT NAMES
MAIN BODY COMPONENTS ...........................................................................10
CONTROL PANEL COMPONENTS .................................................................11
MONITOR SCREEN .........................................................................................13
PRINTER OUTPUT ..........................................................................................15
STANDARD ACCESSORIES ...........................................................................20
PREPARATIONS
INSTALLATION ................................................................................................21
CONNECTING POWER CABLE ......................................................................22
CONNECTING EXTERNAL I/O TERMINALS .................................................22
INITIAL SETTINGS ...........................................................................................23
INITIAL SET SCREEN ......................................................................................24
NO. SETTING ...................................................................................................29
PRINTOUT .......................................................................................................33
CUSTOM-PRINT SETTINGS ...........................................................................38
ON-LINE (DATA COMMUNICATION) ..............................................................44
MENU SETTING ...............................................................................................47
PRINTER PAPER SETTING ............................................................................53
RESETTING FROM POWER SAVE STATUS .................................................54
BASIC OPERATIONS
PREPARATION BEFORE MEASUREMENT ...................................................55
MEASUREMENT UNDER AUTO START MODE (ONLY IN KR-8900) ...........57
MEASUREMENT UNDER MANUAL MODE ....................................................62
ERASING MEASUREMENT VALUES .............................................................64
INDIVIDUAL OPERATIONS
PRINT-OUT OF MEASUREMENT VALUES ....................................................65
MEASUREMENT OF CORNEA DIAMETER (ONLY IN KR-8900) ...................67
MEASUREMENT OF HARD CONTACT LENS ................................................71
INPUT/OUTPUT USING RS232C ....................................................................72
OUTPUT USING USB ......................................................................................72

9
TROUBLESHOOTING
TROUBLE-SHOOTING OPERATIONS ............................................................73
SPECIFICATIONS AND PERFORMANCE
ELECTROMAGNETIC COMPATIBILITY .........................................................77
ELECTRIC RATING .........................................................................................81
SYSTEM CLASSIFICATION ............................................................................81
DIMENSIONS AND WEIGHT ...........................................................................81
PURPOSES OF USE .......................................................................................81
REFERENCE
OPTIONAL ACCESSORIES .............................................................................82
SHAPE OF PLUG .............................................................................................82
MAINTENANCE
DAILY CHECKUPS ..........................................................................................83
MAINTENANCE ................................................................................................87

10
COMPONENT NAMES
COMPONENT NAMES
MAIN BODY COMPONENTS
Measuring Head
Clamping knob
Control panel
External I/O terminal
monitor
Measurement switch
Power lamp
Clamping knob
(for movement)
Contorol lever
Measuring Head Unit
Base Unit
Power switch
Forehead rest
Brightness volume
Examination window
Eye height mark
Chinrest tissue pin
Chinrest
Cap (for examination window)
Chinrest Unit
Printer cover
open switch

11
COMPONENT NAMES
CONTROL PANEL COMPONENTS
RM-8900
Print switch.................................... Prints out the measurement result. When there is no
measurement value, press the switch to feed paper.
Menu switch.................................. Displays the menu screen.
IOL switch ..................................... Press the switch to try measurement when errors are
likely, for example, eyes with IOL.
Graphic print switch.......................Prints out graphically the state of refraction.
Target image switch ...................... Allows the operator to observe the stored target
image on the monitor screen.
Fixation target brightness switch...Changes the brightness of fixation target.
CYL display selection switch......... Changes the CYL display.
Print switch Menu switch
Target image
observation switch
Fixation target
brightness switch
CYL (cylinder)
display selection
switch
Graphic print switch
IOL switch
CYL

12
COMPONENT NAMES
KR-8900
Print switch...........................Prints out the measurement result. When there is no mea-
surement value, press the switch to feed paper.
Menu switch.........................Displays the menu screen.
IOL switch ............................Press the switch to try measurement when errors are
likely, for example, eyes with IOL.
Graphic print switch..............Prints out graphically the state of refraction.
Target image switch .............Allows the operator to observe the stored target image on
the monitor screen.
Fixation target brightness switch ....Changes the brightness of fixation target.
CYL display selection switch ....Changes the CYL display.
Measurement mode switch ......Changes the measurement mode.
Auto start switch...................Switch between auto start and manual mode.
Cornea diameter switch.......Measures the cornea diameter.
Print switch Menu switch
IOL switch
Measurement
mode switch
Target image
observation switch
Fixation target
brightness switch
CYL (cylinder)
display selection
switch
Graphic print switch Auto start switch
Cornea diameter
switch
CYL
RK

13
COMPONENT NAMES
MONITOR SCREEN
RM-8900
MEASURING SCREEN (LAYOUT 1)
MEASURING SCREEN (LAYOUT 2)
INITIAL SETTING SCREEN
MENU SETTING SCREEN
S + 0.00 C +0.50 A 100
S + 0.00 C +0.50 A 100
CYL
VD
12.00
R
03 03
L
01
0001
(-)
/
RL
Frequency of measurement
Alignment mark
Smallest measurable pupil
diameter mark
CYL power symbol
Vertical distance
Instrument No.
Patient No.
Typical value
Target eye
IOL Mode Result of refractory power
measurement
Fixation target brightness
S + 0.00
+ 0.50
100
+ 0.00
+ 0.50
100
C
A
S
C
A
RL
CYL VD
0001
(-)
12.00
01 R
01 01
L
/
Frequency of measurement
Alignment mark
Smallest measurable pupil
diameter mark
CYL power symbol
Vertical distance
Instrument No.
Patient No.
IOL Mode
Result of refractory power
measurement (Left eye)
Target eye
Fixation target brightness
Result of refractory power
measurement (Right eye)
INITIAL SET
NUMBER SET
PRINT OUT
ON-LINE
EXIT
INITIAL MENU
STEP
AXIS STEP
VD
CONT. MEAS
ON LINE
ADD
DATE
/ TIME
D
/ MM
EXIT
0.12
0.25
MEASURE SWITCH
PRINT SWITCH ITEM SELECT
SETTING MENU

14
COMPONENT NAMES
KR-8900
MEASURING SCREEN(LAYOUT 1)
MEASURING SCREEN(LAYOUT 2)
INITIAL SETTING SCREEN
MENU SETTING SCREEN
CORNEA DIAMETER MEASUREMENT SCREEN
S + 0.00 + 0.50 100CA
S + 0.00 + 0.50 100CA
H 44 .00 44 .00 100VA
RK
mD
CYL
VD
12.00
R
R03 03
03 03
K
L
01
0001
(-)
/
/
RL
Frequency of measurement (KRT)
Vertical distance
Frequency of measurement (REF)
Alignment mark
Smallest measurable pupil
diameter mark
CYL power symbol
Mode
Vertical distance
Instrument No.
Patient No.
Alignment bar
Typical value
Target eye
Cornea measurement result
IOL Mode
D/MM mark Result of refractory power
measuremen
Fixation target brightness
S
C
A
H
V
A
S
C
A
H
V
A
+ 0.00
+ 0.50
100
43.00
44.00
180
+ 0.00
+ 0.50
100
43.00
44.00
180
CYL 8&
12.00
01
0001
(-)
RL
R
R01
K
L
/
01 01 01
/
O&
RK
Frequency of measurement
Alignment mark
Smallest measurable pupil
diameter mark
CYL power symbol
Vertical distance
Instrument No.
Patient No.
IOL Mode
Result of refractory power
measurement (Left eye)
Target eye
Fixation target brightness
Result of refractory power
measurement (Right eye) Cornea measurement result(Left
eye)
Cornea measurement
result(Right eye)
Mode
D/MM mark
INITIAL SET
NUMBER SET
PRINT OUT
ON-LINE
EXIT
INITIAL MENU
STEP
AXIS STEP
VD
CONT. MEAS
ON LINE
ADD
DATE
/ TIME
D
/ MM
EXIT
0.12
0.25
MEASURE SWITCH
PRINT SWITCH ITEM SELECT
SETTING MENU
CORNEA DIAMETER
RL
RL

15
COMPONENT NAMES
PRINTER OUTPUT
RM-8900
When measurement is done under the IOL mode, a reliability factor is printed out
following the Ιmark.
The reliability factor is formed with integers 1 to 9 in increasing order of reliability.
Additionally, if the reliability is high enough, the reliability factor is not shown in the
printout.
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Patient No.
Instrument No.
VD (vertical distance)
Cylindrical power mark
Results of 5 refractory power measurements of
right eye (recordable up to 10 measurements)
Typical value of right eye
Results of 5 refractory power measurements of left eye (recordable
up to 10 measurements)
Typical value of left eye
PD (pupil distance)
Reliability mark
(displayed when reliability is low)
Bar code
Work ID No.
Equivalent spherical power of right eye
The ( ) mark is added when measurement values are not fully
reliable.
The Ιmark is displayed at IOL mode.
If the reliablity is low and values of C and A cannot be determined,
∗∗ marks are given to pertaining columns.

16
COMPONENT NAMES
KR-8900
When "KRT PRINT TYPE" is set to "NORMAL"
<R/K> mode
When measurement is done under the IOL mode, a reliability factor is printed out
following the Ιmark.
The reliability factor is formed with integers 1 to 9 in increasing order of reliability.
Additionally, if the reliability is high enough, the reliability factor is not shown in the
printout.
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Bar code
Work ID No.
Patient No.
Instrument No.
VD (vertical distance)
Cylindrical power mark
Right eye measurements
Measurement Results of 3 right eye measurements
(recordable up to 10 measurements)
Typical value of riht eye
Equivalent spherical power of right eye
The ( ) mark is added when measurement values are not
fully reliable.
PD value
ADD (ordinary additional power)
Near vision PD value
Measured value of horizontal corneal curvature
Measured value of vertical corneal curvature
Average value
Corneal astigmatic power
Cornea diameter
ALL mode (example)
Low reliability mark
D1:Refractory power of second principal meridian
D2:Refractory power of first principal meridian
A1:angle of second principal meridian

17
COMPONENT NAMES
<REF> mode <KRT> mode
0#/'
4'(&#6#
ޛ4ޜ 5
  
  
%;. 
%#
8&
2& #&& 02&
AA#/
0Q
-4
  
  
 
5' 
5' 

  
ޛ.ޜ 5

  

%#
  
 

  
  
612%10

 
AA#/
0Q
0#/'
-46&#6#
ޛ4ޜ &
*  
 
  
8
%;.  
#8'
// #
%140'#&+#
//
 
// #
-4
عع
عع
 
عع  
عع  
عع 




 
612%10
ޛ.ޜ &
*  
 
  
8
%;.  
#8'
// #
%140'#&+#
//
 
// #
عع
عع
 
عع  
عع  
عع 




 
-46&#6#
ޛ4ޜ &
4   
 
  
4
#8'
// #
Patient No.
Instrument No.
VD (vertical distance)
Cylindrical power mark
Results of 5 refractory
power measurements of
right eye (recordable up to
10 measurements)
Typical value of right eye
Results of 5 refractory
power measurements of
left eye (recordable up
to 10 measurements)
Typical value of left eye
PD (pupil distance)
Results of 5 right eye cor-
neal curvature measure-
ments of right eye,
average value and astig-
matic power of cornea
(recordable up to 10 mea-
surements each for right /
left eye)
Typical measured value
of right eye corneal
curvature
Measured value of right
eye cornea (mm)
Measured value of left eye
Reliability mark
(displayed when reliability is low)
<R/K><KRT> mode
The kerato data display in the case of setting
the HV display as the R1R2 display.
STD 2 FORMAT, see “Setting communication format” on page 45.
MM1:Radius of curvature
of second principal
meridian
MM2:Radius of curvature
of first principal
meridian
A 1:Angle of second prin-
cipal meridian

18
COMPONENT NAMES
When "KRT PRINT TYPE" is set to "CLASSIC"
<R/K> mode
When measurement is done under the IOL mode, a reliability factor is printed out
following the Ιmark.
The reliability factor is formed with integers 1 to 9 in increasing order of reliability.
Additionally, if the reliability is high enough, the reliability factor is not shown in the
printout.
Bar code
Work ID No.
Patient No.
Instrument No.
VD (vertical distance)
Cylindrical power mark
Right eye measurements
Measurement Results of 5 right eye measurements
(recordable up to 10 measurements)
Typical value of riht eye (The * mark is displayed when 3
or more measurements are done.)
Equivalent spherical power of right eye
The ( ) mark is added when measurement values are not
fully reliable.
Measured value of horizontal corneal curvature
Measured value of vertical corneal curvature
Average value
Cornea diameter
ALL mode (example)
Cornea astigmatic power
PD value
The Imark is displayed at IOL mpde.
If the reliability is low and values of C and A cannot be
detemined, ** marks are given to pertaining columns.
Instrument No.