Huvitz HRK-7000 User manual

--------------------------------------------------------Auto Ref/Keratometer HRK-7000/7000A 1
User’s Manual
Auto Ref/Keratometer HRK-7000/7000A

2 Auto Ref/Keratometer HRK-7000/7000A --------------------------------------------------------
IMPORTANT NOTICE
Potential electromagnetic or other interference between medical equipments and
other devices being operated together in the same environmental may expert an
adverse influence on functioning of the medical equipment. Non-medical
equipments not in compliance with the requirements of EN 60601-1 and EN
60601-1-2 should not be used together in the same environmental as the medical
equipments.
This equipment has been tested and found to comply with the limits for medical devices in
IEC 60601-1-2:2001. These limits are designed to provide reasonable protection against
harmful interference in a typical medical installation.
Power Cord
For use of equipment in rated voltage less than 125Vac,minimum 6A,Type SJT or SVT ,
18/3AWG,10A, max 3.0m long : One end with Hospital Grade Type, NEMA 5-15P Other
end with appliance coupler. For use of equipment in rated voltage less than
250Vac,minimum 6A,Type SJT or SVT , 18/3AWG,10A, max 3.0m long : One end
terminatesd with blade attachment plug(HAR) Type, NEMA 6-15P.
This product may malfunction due to electromagnetic waves caused by portable personal
telephones, transceivers, radio-controlled toys, etc. Be sure to avoid having objects such as,
which affect this product, brought near the product.
The information in this publication has been carefully checked and is believed to be entirely
accurate at the time of publication. HUVITZ assumes no responsibility, however, for possible
errors or omissions, or for any consequences resulting from the use of the information
!
WARNING

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contained herein.
HUVITZ reserves the right to make changes in its products or product specifications at any
time and without prior notice, and is not required to update this documentation to reflect such
changes.
©2004 - 2007 - Huvitz Co., Ltd.
-689-3, Gumjeong-dong, Gunpoci, Gyeonggi-do,
435-862, Republic of Korea
All rights are reserved. Under copyright laws, this manual may not be copied, in whole or in
part, without the prior written consent of HUVITZ Co., Ltd.

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Contents
1. Introduction ................................................................................................................7
1.1. Overview ..........................................................................................................7
1.2. Classification....................................................................................................7
2. Safety Information......................................................................................................8
2.1. Overview ..........................................................................................................8
2.2. Safety Symbol..................................................................................................9
2.3. Environmental Considerations ....................................................................... 11
2.4. Safety Precaution...........................................................................................13
3. Characteristics .........................................................................................................15
4. Note for Use..............................................................................................................16
5. Names and functions of each part .........................................................................17
5.1. Main parts ......................................................................................................17
5.2. Explanation on Switches in Front...................................................................20
6. Installation of Equipment & Preparation of Measurement ...................................21
7. Exercise through Model Eye ...................................................................................23
8. Measurement ............................................................................................................29
8.1. Refractometry (REF Mode)............................................................................31
8.1.1. Manual Measurement Mode..................................................................32
8.1.2. Auto Measurement Mode ......................................................................38
8.2. Keratometry (KER Mode)...............................................................................41

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8.2.1. Manual Measurement Mode ................................................................. 41
8.2.2. Auto Measurement Mode...................................................................... 44
8.3. Corneal Curvature / Refractive Power Measurement Mode (K&R Mode) .. 45
8.3.1. Manual Measurement Mode ................................................................. 45
8.3.2. Auto Measurement Mode...................................................................... 48
8.3.3. Diverse Indications................................................................................ 49
8.4. Keratometry Peripheral Measurement (KER-P Mode) .................................. 50
8.5. Measurement of Contact Lens Base Curve(CLBC Mode)............................. 54
8.6. Intraocular Lens (IOL) Measurement Mode (IOL Mode)................................ 56
8.7. Retro-ILLUM Measurement Mode (Retro-ILLUM Mode) ............................... 57
8.7.1. Adjustment of Array and Focus ............................................................. 57
8.7.2. Observation on Retro-Illum ................................................................... 61
8.7.3. Storage.................................................................................................. 62
8.7.4. Examination on the other eye ............................................................... 62
8.7.5. Call for Stored Image ............................................................................ 63
8.7.6. Return to measurement mode .............................................................. 64
9. Other Modes............................................................................................................. 65
9.1. Acuity Map Mode (Z-MAP Mode) .................................................................. 65
9.1.1. Composition of Window ........................................................................ 65
9.1.2. Change of Window................................................................................ 67
9.2. Measurement of Corneal Radius(SIZE Mode) .............................................. 69
9.3. VIRTUAL COMPARISON Mode .................................................................... 73
9.4. DISPLAY Mode.............................................................................................. 75
9.5. User SETUP Mode ........................................................................................ 76

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9.6. Power saving Function...................................................................................85
10. Self diagnosis & Maintenance ................................................................................86
10.1. Before calling for serviceman.........................................................................86
10.2. Replacement..................................................................................................89
10.2.1. Printer paper..........................................................................................89
10.2.2. Chin rest paper ......................................................................................90
10.2.3. Replacing Fuse......................................................................................90
10.3. Cleaning Equipment.......................................................................................91
10.4. As changing the installation place of the equipment......................................91
10.5. Disposal .........................................................................................................91
11. Service Information..................................................................................................92
12. Main Specifications..................................................................................................93
13. Accessories ..............................................................................................................95
14. Service Information..................................................................................................96

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1. Introduction
1.1. Overview
Auto Ref/Keratometer HRK-7000A is the equipment to provide the information of
Spherical, Cylindrical and Axis while measuring the refraction of examinee’s eyes. Auto
Ref/Keratometer HRK-7000A is the equipment that can measure the corneal curvature
of examinee. In addition, it can measure PD (=distance in between pupils) and pupil
size. Especially, as its peripheral (=corneal peripheral curvature) measurement is
possible as measuring the corneal curvature of examinee, it is possible to know the
information on the corneal peripheral curvature as well as the corneal core curvature,
which enables the exact prescription for the examinee.
This equipment shall provide the optimal optometry information with the functions of IOL
(=measuring intraocular lens) and Retro-Illumination (=observing retro-illumination) to
obtain an optimal figure of the eyes’ state of examinee.
CLBC (Contact Lens Base Curve) measurement is also a basic function of this product.
The HRK-7000A is provided with an Auto-tracking function and a motorized chinrest
function.
Auto-tracking mechanism that automatically achieves alignment in the up/down,
right/left direction and focusing.
A motorized up/down chinrest allows the operator to easily adjust the height of the
chinrest.
1.2. Classification
Classification of product : 2nd Grade Medical Instrument
Resistance against electric shock : Class I (earthed)
Protection class against electric : Type B
Protection against harmful ingress of water : Ordinary, IPX0
Degree of safety in the presence of a flammable anesthetics mixture with air or with
oxygen or with nitrous oxide : Not suitable for use in the presence of a flammable
anesthetics mixture with air or with oxygen or with nitrous oxide.
Mode of operation : Continuous

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2. Safety Information
2.1. Overview
Safety is everyone’s responsibility. The safe use of this equipment is largely dependent
upon the installer, user, operator, and maintainer. It is imperative that personnel study
and become familiar with this entire manual before attempting to install use, clean,
service or adjust this equipment and any associated accessories. It is paramount that
the instructions contained in this manual are fully understood and followed to enhance
safety to the patient and the user/operator. It is for this reason that the following safety
notices have been placed appropriately within the text of this manual to highlight safety
related information or information requiring special emphasis. All users, operators, and
maintainers must be familiar with and pay particular attention to all Warnings and
Cautions incorporated herein.
"Warning” indicates the presence of a hazard that could result in severe personal injury,
death or substantial property damage if ignored.
NOTE
"Note” describes information for the installation, operation, or maintenance of which is
important but hazard related if ignored.
“Caution” indicates the presence of a hazard that could result in minor injury, or
property damaged if ignored.
!
WARNING
!
CAUTION

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2.2. Safety Symbol
The International Electrotechnical Commission (IEC) has established a set of symbols
for medical electronic equipment which classify a connection or warn of any potential
hazards. The classifications and symbols are shown below.
I and O on power switch represent ON and OFF respectively.
Type B Isolated patient connection.
It indicates the connection of signal input/output.
This symbol identifies a safety note. Ensure you understand
the function of this control before using it. Control function
is described in the appropriate User’s or Service Manual.
It indicates the year of manufacture and the manufacturer.
Identifies the point where the system safety ground is
fastened to the chassis. Protective earth connected to
conductive parts of Class I equipment for safety purposes.

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Hot surface.
UL60601-1
CAN/CSA C22.2
NO.601.1
MEDICAL EUIPMENT
WITH RESPECT TO ELECTRIC SHOCK
FIRE AND MECHANICAL HAZARDS ONLY IN
ACCORDANCE WITH UL 60601-1, AND
CAN/CSA C22.2 NO.601.1
Disposal of your old appliance
When this crossed-out wheeled bin symbol is attached to a
product it means the product is covered by the European
Directive 2002/96/EC.
All electrical and electronic products should be disposed of
separately from the municipal waste stream via designated
collection facilities appointed by the government or the local
authorities.
The correct disposal of your old appliance will help prevent
potential negative consequences for the environment and
human health.
4. For more detailed information about disposal of your old
appliance, please contact your city office, waste disposal
service or the shop where you purchased the product.
Alternating Current

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2.3. Environmental Considerations
Please avoid the environment below for the operation and storage of the equipment.
Where the equipment is exposed to water vapor.
Don’t operate the equipment with wet hands.
Where the machine is exposed directly to the sunlight.
Where the temperature changes frequently (Normal
temperature for operation of the machine is at the range of
10°C ~ 35°C, and the humidity is at the range of 30%~70%.
Where any heaters are at the close distance to the machine.
Where the humidity is high and there are problems to the heat
dissipation and/or ventilation.
Where the equipment is subject to excessive shocks or
Vibrations.

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Where the machine can be exposed to the chemical or
flammable substances.
Please keep the equipment out of dust and do not let
inserted any metal parts such as coins, clips, etc.
Do not disassemble or open the machine. The manufacture
shall have no responsibility for any problems caused by
these.
Do not close the thermal ventilation outlet.
Do not connect the AC power plug into the outlet while not
putting the parts of machine together completely. It can
harm the equipment.
Do not pull the plug out of outlet while holding the cord.
For the normal operation of the machine, please keep the ambient temperature is
10℃~ 35℃, humidity is 30% ~ 75% and atmospheric pressure is 800 ~ 1060hpa. For
the Transfortation of the machine, please keep the ambient temperature is -40℃~
70℃, humidity is 10% ~ 95% and atmospheric pressure is 500 ~ 1060hpa. For the
Storage of the machine, please keep the ambient temperature is -10℃~ 55℃,
humidity is 30% ~ 75% and and atmospheric pressure is 700 ~ 1060hpa. Avoid
environments where the equipment is exposed to excessive shocks or vibrations.

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2.4. Safety Precaution
This equipment has been developed and tested in conformity with domestic &
international safety standards and regulations, which guarantees the high stability of
this product. This guarantees a very high degree of safety for this device. The legislator
expects us to inform the user expressively about the safety aspects in dealing with the
device. The correct handling of this equipment is imperative for its safe operation.
Therefore, please read carefully all instructions before switching on this device. For
more detailed information, please contact our Customer Service Department or one of
our authorized representatives.
1. This equipment must not be used (a) in an area that is in danger of explosions
and (b) in the presence of flammable, explosive, or volatile solvent such as
alcohol, benzene or similar chemicals.
2. The device should neither be kept nor installed in the place with high humidity.
For the optimal operation, the humidity should be at the range of 30%~75%.
The machine should not be exposed to the place where water splashes, drips
or sprays. Do not place containers containing fluids, liquids, or gases on top of
any electrical equipment or devices
3. The equipment must be operated only by, or under direct supervision of
properly trained and qualified person/s.
4. Modifications of this equipment may only be carried out by Huvitz’s service
technicians or other authorized persons.
5. Customer maintenance of this equipment may only be performed as stated in
the User’s Manual and Service Manual. Any additional maintenance may only
be performed by Huvitz’s service technicians or other authorized persons.
6. The manufacturer is only responsible for effects on safety, reliability, and
performance of this equipment when the following requirements are fulfilled: (1)
The electrical installation in the respective room corresponds to the
specifications stated in this manual and (2) This equipment is used, operated
and maintained according to this manual and Service Manual.

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7. The manufacturer is not liable for damage caused by unauthorized tampering
with the device(s). Such tampering will forfeit any rights to claim under
warranty.
8. The equipment may only be used together with accessories supplied by
Huvitz’s. If the customer makes use of other accessories, use them only if
there are usability under technical safety aspects has been proved and
confirmed by Huvitz or the manufacturer of the accessory.
9. Only persons who have undergone proper training and instructions are
authorized to install, use, operate, and maintain this equipment.
10. User’s manual or service manual should be kept in the place where the
persons in chare of operation and maintenance can access easily any time.
11. Do not force cable connections. If a cable does not connect easily, be sure that
the connector (plug) is appropriate for the receptacle (socket). If you cause any
damage to a cable connector(s) or receptacle(s), let the damage(s) be repaired
by an authorized service technician.
12. Please do not pull on any cable. Always hold on to the plug when
disconnecting cables.
13. This equipment may be used for the international application related to
Refractometry and Keratometry according to this manual.
14. Before every operation, proceed with visual inspection on the equipment
exterior to seek any mechanical damage(s) to ensure the proper functioning.
15. Do not obstruct any ventilation outlet for proper heat dissipation.
16. In case of any presence of smoke, spark or abnormal noise/smell from the
machine, please power off immediately and pull out the plug.

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3. Characteristics
1. It is possible to measure the refractive power and corneal curvature with one(1)
set of the machine: Refractometry and Keratometry
2. As the measurement range of refractive power is wide from-25D to +22D, it
can measure the severe myopia.
3. As measuring the curvature, the minimum measurable pupil diameter is
Ø2.0mm.
4. The equipment can measure the peripheral part of cornea so that user can see
the value of curvature and eccentricity of each point while consecutively
measuring the curvature of peripheral part around cornea to the direction of
90°degree to the upper/below/right/left from the core of cornea.
5. The refractive error can be showed in the form of Zernike topographic map.
6. The fogging technique which is applied to the internal fixed target is to make
the more accurate measurement possible while letting the eyes of patient at
the natural and comfortable state.
7. It is possible to select the display type of Refractometry and Keratometry.
8. It is possible to measure the distance in between pupils (PD).
9. Through the retro-illumination, the HRK-7000A can observe the eyes’ condition
of cataract patients or the scratches on the surface of contact lenses. It can
store the two (2) images for each eye, and show the patients displaying them
on the monitor screen.

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4. Note for Use
1. Do not hit or drop the instrument. The instrument may be damaged by the
strong impact. The impact may damage the function of this instrument. Handle
it with care.
2. The precision of measurement can be affected when the machine is exposed to
the direct sunlight or too bright indoor illumination. It is recommended to
perform the measurement in the dark optometry room.
3. If you want to use it as connecting the device to other equipment, please follow
the guidance of our local representative.
4. Sudden heating of the room in cold areas will cause condensation of vapor on
the protective glass in the measurement window and on optical parts inside the
instrument. In this case, wait until condensation disappears before performing
measurements.
5. Make sure to keep the lens in examinee side is clean at all times. In case that it
has become dirty by dusts or other substances, it can cause errors in the
machine or affect the precision of measurement.
6. In case of any presence of smoke, smell or noise during the use of machine,
please contact our local representative after plugging it off from the socket
(outlet).
7. If you clean the surface of the equipment with organic solvents such as alcohol,
thinner, benzene, etc, it can damage the machine. So, please do not use them.
8. In case of moving HRK-7000A, carry it holding the lower part of machine body
with both hands as fixing the stage after switching the machine off all the time.
9. In case of no use of the machine for a long time, please put the dust cover on
the device after powering and plugging off.

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5. Names and functions of each part
5.1. Main parts
[Figure 1. Front]
1. Height Adjustment Mark: Adjusts the eyes’ height of examinees
2. Operation Buttons: Selecting of functions
ٍ3. Operation Lamp : Indicates whether or not the electric power is on
4. Display Monitor: Monitor for measurement
5. Measurement Button: Performing the measurement by pressing it after focusing.
6. Operation Lever: Adjusting the focus by moving to the directions of forward/backward,
left/right, up and down.
7. Stage Fixing Lever: Fixing the stage
8. Monitor Brightness Adjusting Knob: Adjusting the brightness of monitor
9. Printer: Printing the measured results
10. Chinrest up/down button: Move up or down the chinrest.
11. Printer button: A button for printing of measuring results.

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[Figure 2. Back Section]
1. Forehead Rest: Preventing the vibration by fixing the forehead
2. Measuring Object Lens: Measuring the image imaging on the retina of eyes.
3. Chin Rest: Preventing the vibration by fixing the chin
4. Power Switch: Switch for power on/off

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[Figure 3. Bottom Section]
NOTE
As connecting to exterior monitor, noise can appear on the monitor owing to the length
or kind of cable, and the quality of monitor.
1. Power Supply Socket: A socket connecting to exterior power plug
2. Serial Interface Connector: A terminal connecting to the exterior equipment
3. Exterior Monitor Connection Connector: Connecting into the exterior monitor
4. Clamping Bolt: Fixing the system stage

20 Auto Ref/Keratometer HRK-7000/7000A --------------------------------------------------------
5.2. Explanation on Switches in Front
[Figure 4. Front Section Switches]
1. MODE Button: A switch to change the mode for measurement
2. DISP Button: A switch to indicate the measured results on the monitor
3. FOCUS Button: A switch to change Auto Focus mode.
4. AUTO Button: A switch to begin to perform the measurement manually or automatically 5.
5. IOL Button: A switch to measure the eyesight of cataract patients or patients undergone
IOL implantation.
6. FUNC Button: A switch to change the functions of ③, ④, ⑤buttons
7. Comp Button: Virtual Comparison Function.
8. Z-MAP Button: A switch to iindicate Zernike Map.
9. VD Button: To change the VD(Vertex Distance) value.
10. SIZE Button : To measure size of pupil.
11. ILLUM Button: To check the status of the cornea, crystalline lens and contact lens by
freezing images
① ②③④⑤
⑥
⑦ ⑨ ⑩⑧ ⑪