Nidek ARK-730A

99 Pages·2004·1.77 MB·English

NIDEK CO., LTD. : 34-14, Maehama, Hiroishi-cho, Gamagori, Aichi 443-0038, Japan
(Manufacturer) Telephone: [phone]
Facsimile: (0533) 67-6610
NIDEK CO., LTD : 6th Floor, Takahashi Bldg., No.2, 3-chome, Kanda-jinboucho
(Tokyo Office) Chiyoda-ku, Tokyo 101-0051, Japan
Telephone: [phone]
Facsimile: [phone]
Telex: 2226647 NIDEK J
NIDEK INCORPORATED : 47651 Westinghouse Drive, Fremont, California 94539, U. S. A.
(United States Agent) Telephone: [phone]
Facsimile: [phone]
NIDEK SOCIETE ANONYME : Europarc 13, rue Auguste Perret, 94042 CRETEIL, France
(Authorized Representative) Telephone: [phone]
Facsimile: (01) 49 80 32 08
March 2006
32163-P902E
Printed in JAPAN
NIDEK
AUTO REF/KERATOMETER
Model ARK-730A
OPERATOR’S MANUAL
BEFORE USE OR MAINTENANCE, READ THIS MANUAL.
This Operator’s Manual contains information necessary for the operation of the NIDEK
AUTO REF/KERATOMETER Model ARK-730A.
This manual includes the operating procedures, safety precautions, specifications, and
information about accessories and maintenance.
The device complies with ISO 10342 (Ophthalmic devices—Eye Refractometers). IEC
60601-1 and UL 60601-1 standards are applied in this manual. The dioptric powers are
indicated with a reference of wavelength λd = 587.56 nm. This manual is necessary for
proper use. Especially, the safety precautions and operating procedures must be
thoroughly understood prior to operation of the device. Keep this manual handy for
reference.
There are no user-serviceable parts inside the device except printer paper and fuses.
Therefore, if you encounter any problems or have questions about the device, please
contact NIDEK or your authorized distributor.
MEDICAL ELECTRICAL EQUIPMENT
34VK
UL60601-1
CAN/CSA C22.2 NO. 601.1
WITH RESPECT TO ELECTRICAL SHOCK, FIRE AND
MECHANICAL HAZARDS ONLY IN ACCORDANCE WITH
UL6060l-1 AND CAN/CSA C22.2 NO. 601.1
(This applies to products whose power source is 100/120 Vac.)
Table of Contents
§ Page
1
INTRODUCTION.........................................................................................................1-1
1.1 Outline of the Device................................................................................................1-1
1.2 Indications for Use....................................................................................................1-1
1.3 Classifications ..........................................................................................................1-1
1.4 Symbol Information...................................................................................................1-3
§
2
SAFETY.........................................................................................................................2-1
2.1 Cautions in Storage, Transportation and Installation.................................................2-1
2.2 Connecting the Device to a Wall Outlet and Handling the Power Cord ....................2-4
2.3 Cautions during Use..................................................................................................2-5
2.4 Maintenance..............................................................................................................2-9
2.5 Disposal....................................................................................................................2-9
2.6 Labels .....................................................................................................................2-10
§
3
CONFIGURATION......................................................................................................3-1
§
4
OPERATING PROCEDURES ....................................................................................4-1
4.1 Operation Flow.........................................................................................................4-1
4.2 Auto-Off Mode..........................................................................................................4-1
4.3 Preparation for Measurement....................................................................................4-2
4.4 AR (refractive error), KM (corneal curvature radius) Measurements ......................4-6
4.4.1 When both auto-tracking and auto-shot are ON................................................4-6
4.4.2 When both auto-tracking and auto-shot are OFF............................................4-14
4.4.3 When auto-tracking is ON and auto-shot is OFF............................................4-16
4.5 CS (Corneal Size) Measurement.............................................................................4-17
4.6 PS (Pupil Size) Measurement .................................................................................4-19
4.7 PD (Pupillary Distance) Measurement....................................................................4-21
4.8 Measuring Sagittal Radius ......................................................................................4-23
§
5
PRINTOUT ...................................................................................................................5-1
5.1 Printing Measured Data ............................................................................................5-1
5.2 Eyeprint ....................................................................................................................5-4
§
6
DATA TRANSFER USING EYE CARE CARD SYSTEM.........................................6-1
6.1 Writing Measured Data to the Eye Care Card...........................................................6-1
6.2 Importing LM Data to be Used for the View Comparison Function ..........................6-3
6.3 Erasing Data on the Eye Care Card...........................................................................6-4
§
7
ENTERING PATIENT ID USING BARCODE SCANNER.......................................7-1
7.1 Connecting the Barcode Scanner...............................................................................7-1
7.2 Reading a Patient ID .................................................................................................7-2
§ Page
8
VARIOUS SETTINGS..................................................................................................8-1
8.1 Setting Parameters ....................................................................................................8-1
8.2 Setting Date and Time.............................................................................................8-10
8.3 Entering Comments .................................................................................................8-11
8.4 Measuring Hard Contact Lenses .............................................................................8-14
§
9
TROUBLESHOOTING GUIDE .................................................................................9-1
§
10
MAINTENANCE ........................................................................................................10-1
10.1 Replacing the Printer Paper ..................................................................................10-1
10.2 Setting a Stack of Chinrest Paper..........................................................................10-3
10.3 Replacing Fuses....................................................................................................10-4
10.4 Cleaning the Measuring Window ..........................................................................10-6
10.5 Cleaning the Exterior ............................................................................................10-7
10.6 List of Replacement Parts .....................................................................................10-7
§
11
SPECIFICATIONS .....................................................................................................11-1
11.1 Specifications .......................................................................................................11-1
11.2 Accessories...........................................................................................................11-5
11.2.1 Standard accessories ...................................................................................11-5
11.2.2 Optional accessories....................................................................................11-5
§
12
EMC (ELECTROMAGNETIC COMPATIBILITY) ...............................................12-1
APPENDIX A. GLOSSARY ...................................................................................................A-1
INDEX............................................................................................................. End of this manual
[This page is intentionally left blank.]
§ INTRODUCTION
1
1.1 Outline of the Device
The ARK-730A is an auto ref/keratometer which contains both a refractometer and a keratometer
in one unit. The refractometer objectively measures the refractive errors of sphere, cylinder, and
axis for the lens that corrects the patient’s vision into emmetropia. The keratometer measures
the corneal curvature radius, corneal refractive power, corneal cylindrical power, and corneal
cylinder axis. Weak infrared rays are used for these measurements.
This device has a main body and a measuring unit integrated on one base. On the base are a
chinrest on the patient’s side and a printer on the operator’s side which outputs measured results.
On the main body are a TV monitor, a control panel, and a joystick, which are used to make
alignment and perform operations. The measuring unit has a measuring window into which the
patient looks and where the infrared ray radiates on the patient’s eye. Also, there is an auto-
tracking mechanism, which automatically moves the measuring unit up, down, right, left, back
and forth to follow the eye movement, and an auto-shot function, which automatically takes
serial measurements when the device is in focus.
1.2 Indications for Use
The Auto-Ref/Keratometer ARK-730A is used to measure the refractive errors such as sphere,
cylinder and its axis as well as corneal radius of curvature of the eye. The measured values are
mainly used for the prescription of refractive correction with spectacle lenses or contact lenses.
1.3 Classifications
[Classification under the provision of 93/42/EEC (MDD)] Class IIa
The ARK-730A is classified as Class IIa.
[Form of protection against electric shock] Class I
The ARK-730A is classified as Class I.
A Class I is a device in which the protection against electric shock does not rely on basic
insulation only, but which includes an additional safety precaution in such a way that means
are provided for the connection of the device to the protective (ground) conductor in the fixed
wiring of the installation in such a way that accessible metal parts cannot become live in the
event of a failure in the basic insulation.
Use a power outlet which is equipped with a grounding terminal.
[Degree of protection against electric shock] Type B Applied Part
The ARK-730A is classified as a device with a Type B Applied Part.
A Type B Applied Part provides a particular degree of protection against electric shock,
particularly regarding the following:
- allowable leakage currents
- reliability of the protective earth connection (if present)
1 - 2
[Degree of protection against ingress of liquids] IP 20
The ARK-730A is classified as IP20*1.
The ARK-730A is an ordinary device, as such does not provide protection with respect to
harmful effects due to the ingress of water although it is protected against access to hazardous
parts with a solid matter such as a finger of 12.5 mm in diameter.
Avoid exposing water to the device.
[Degree of protection against flammability]
The ARK-730A is classified as a device not suitable to be used in a potentially flammable
environment.
Do not use near flammable materials.
[Method(s) of sterilization or disinfection recommended by the manufacturer]
The forehead rest and chinrest should be wiped using a cloth dampened with alcohol as
necessary.
[Mode of operation]
Classification of the ARK-730A: continuous operation
*1 In accordance with IEC 60529
1 - 3
1.4 Symbol Information
This symbol indicates that important descriptions are contained in the operator’s manual
and that the operator must refer to the operator’s manual prior to operation or
maintenance.
This symbol indicates that the degree of protection against electric shock is of a Type B
Applied Part.
This symbol of the power switch indicates that when the switch is pressed to this symbol
side, power is supplied to the device.
This symbol of the power switch indicates that when the switch is pressed to this symbol
side, power is not supplied to the device.
This symbol indicates the fuse rating.
This symbol indicates the input port.
This symbol indicates the output port.
This indicates that the device must be supplied only with alternating current.
This indicates the knob for adjusting the contrast.
This indicates the knob for adjusting the brightness.
§ SAFETY
2
The following safety precautions should always be followed.
In this manual, a signal word is used to designate the degree or level of safety alerting.
The definition is as follows:
CAUTION: Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury or property damage accident.
Even situations indicated by CAUTION may result in serious injury under certain
conditions. Safety precautions must be strictly followed at all times.
2.1 Cautions in Storage, Transportation and Installation
CAUTION
• The following environmental conditions must be maintained in storage (on the condition
that the device is packed).
- Place that is not exposed to rain or water.
- Place that is free from harmful gas or liquid.
- Place that does not contain salt, sulfur content or thick dust.
- Place that is not exposed to direct sunlight.
- Temperature: –20 to 60ºC, Humidity: 10 to 95% (Non-condensing)
• Do not drag the device by its cables.
Injury or device damage may result.
• The device must be carried by two persons with its base held with their both hands from
both sides of the device. Never hold the forehead rest, main body or measuring unit.
Injury or device damage may result if the device is carried by one person or areas other
than the base are held.
• To transport the device to another location, store it in a shipping carton. In such cases,
never lock the main body with the locking knob.
Breakdown of the device may result if it is subjected to excessive vibration or shock.
• Connect the power cord and interface cable on a stable, level place with enough space
since the power inlet and interface connectors are provided at the base of the device.
• Install the device in a place that will never be exposed to water.
If water gets into the internal structure of the device, electric shock or device malfunction
may result.