Nidek Medical ARK-730A User Manual (English)

Questions and Answers:

C
Crystal SparksAug 19, 2025
Why is the auto-tracking or auto-shot function not working on my Nidek Medical Equipment?
- J
  Jennifer SparksAug 20, 2025
  The auto-tracking or auto-shot function may not be turned on, so press the appropriate button to activate it. Room illumination reflecting on the cornea can also interfere with these functions; try changing the location and measuring again. Additionally, these functions may not work on certain eyes, such as those with keratoconus or recent corneal surgery. In such cases, turn off the auto-tracking function and proceed with the measurement. If the patient has substantial ocular ataxia or cannot fixate their eyes, disable the auto-tracking function. If the device is near a window with direct sunlight, relocate it to avoid light interference.
E
Earl MannAug 21, 2025
What to do if a measurement error appears on my Nidek Medical Equipment?
- A
  Ashley DixonAug 21, 2025
  A measurement error may occur if the patient blinked during measurement; instruct them to avoid blinking and try again. The eyelid or eyelashes may be obstructing the measurement, so ask the patient to open their eye wider, or gently lift the lid without pressing the eyeball. If the pupil is too small, have the patient sit in a dark room to allow it to enlarge. Also, if measuring an IOL-implanted eye or one with a contact lens, turn on the appropriate setting. Finally, the data may simply exceed the measurable limit.
W
William BradyAug 23, 2025
How to troubleshoot a Nidek Medical Equipment TV monitor and display panel that won't turn on?
- N
  Nathan KellerAug 25, 2025
  First, ensure the power cord is securely connected. Next, check that the power switch is turned on. Finally, inspect the fuses; if they are blown, replace them with new ones.
J
jennifer66Aug 26, 2025
How to fix printing issues with my Nidek Medical Equipment?
- D
  dcontrerasAug 26, 2025
  First, check the printer paper and replace it if it's used up. Second, verify that the "Print" parameter is not set to "NO" and reset the parameter setting if necessary.
B
Benjamin HuffmanAug 27, 2025
What to do if the screen suddenly disappears on my Nidek Medical Equipment?
- J
  Jeffrey GonzalezAug 27, 2025
  The auto-off function may have been activated. Try to recover the monitor ON condition by pressing any button.
E
Eric SantiagoAug 29, 2025
What to do if the TV monitor on my Nidek Medical Equipment doesn't turn on even though the power is on?
- A
  Amanda JeffersonAug 29, 2025
  The auto-off function may have been executed. Try to recover the monitor ON condition by pressing any button. Alternatively, the brightness may be set too low. Open the AUX. button cover and adjust the brightness using the brightness control.
C
Carrie HansonSep 1, 2025
Why do the date and time settings keep going out of order on my Nidek Medical Equipment?
- B
  Brittany ChavezSep 1, 2025
  The internal battery may be dead. Turn the power on and leave it on for 24 hours to recharge the battery.
M
Meredith CarpenterSep 3, 2025
What does Err 7 mean on my Nidek Medical Equipment display panel?
- C
  Christopher CarrSep 3, 2025
  Check the printer paper. The paper may be used up or the printer lever may be incorrectly set. Push the lever down.
D
Dr. Michael ThorntonSep 4, 2025
Why can't I move the main body of my Nidek Medical Equipment laterally?
- L
  Lindsay JenningsSep 4, 2025
  The locking knob may be fixing the main body. Release the main body by turning the locking knob which is beside the joystick.
N
nancy15Sep 6, 2025
Why is my Nidek Medical Equipment printer operating but not producing results?
- J
  Justin BallSep 7, 2025
  The printer roll may be set with the wrong side up. Set it with the correct side up.

Nidek Medical ARK-730A Specifications

General

Type	Auto Ref/Keratometer
Minimum Pupil Diameter	2.0 mm
Printer	Built-in Thermal Printer
Measurement Range (Cylinder)	0D to ±10D
Axis	1° to 180°
Corneal Curvature Radius of Curvature	5.0 to 10.0mm
Corneal Curvature Corneal Refraction	33.75D to 67.5D
Corneal Diameter	2.0 to 12.0 mm
Pupil Diameter	2.0mm to 9.0mm
Target	Internal Fixation Target
Display	LCD Monitor
Power Supply	AC100-240V, 50/60Hz
Pupil Diameter Measurement Range	2.0mm to 9.0mm
Vertex Distance	0mm, 12mm, 13.75mm
Measurement Mode	Auto, Manual
Power Saving	Auto power off function

Summary

Introduction

1.1 Outline of the Device

Overview of the auto ref/keratometer's components and basic functionality.

1.2 Indications for Use

Purpose and application of the device for vision correction measurements.

1.3 Classifications

Device classifications based on safety and regulatory standards (e.g., Class I, Type B).

1.4 Symbol Information

Explanation of symbols used in the operator's manual and on the device interface.

Safety

2.1 Cautions in Storage, Transportation and Installation

Guidelines for safe handling, storage, and installation of the device to prevent damage or injury.

2.2 Connecting the Device to a Wall Outlet and Handling the Power Cord

Procedures for safe electrical connection and power cord management to avoid hazards.

2.3 Cautions during Use

Important safety precautions to follow during device operation to ensure user and patient safety.

2.4 Maintenance

Safety considerations related to device maintenance, cleaning, and servicing procedures.

2.5 Disposal

Recommendations for safe and responsible disposal of the device components according to regulations.

2.6 Labels

Identification and explanation of safety labels and warnings affixed to the device.

Configuration

1 TV monitor

Detailed description of the TV monitor's display functions, target, and indicators.

2 Display panel

Explanation of the display panel showing measurement data, parameters, and status.

3 Auxiliary button cover

Information about the auxiliary button cover and its function for accessing seldom-used buttons.

4 Locking knob

Functionality and usage of the locking knob for securing the main body to the base unit.

Operating Procedures

4.1 Operation Flow

Step-by-step guide outlining the sequence of device operations from power-on to measurement.

4.2 Auto-Off Mode

Explanation of the auto-off power saving feature and how to recover from it.

4.3 Preparation for Measurement

Steps required to prepare the device and patient before initiating measurements.

4.4 AR (refractive error), KM (corneal curvature radius) Measurements

Procedures for performing refractive and corneal curvature measurements on the patient's eye.

4.5 CS (Corneal Size) Measurement

Procedure for measuring the corneal size using the device.

4.6 PS (Pupil Size) Measurement

Procedure for measuring the pupil size.

4.7 PD (Pupillary Distance) Measurement

Procedure for measuring the pupillary distance (PD) between the eyes.

4.8 Measuring Sagittal Radius

Procedure for measuring the sagittal radius of the cornea for detailed analysis.

Printout

5.1 Printing Measured Data

Instructions on how to print measured data and interpret the printout content.

Data Transfer Using Eye Care Card System

6.1 Writing Measured Data to the Eye Care Card

Steps for transferring measured data from the device to an Eye Care card.

6.2 Importing LM Data to be Used for the View Comparison Function

Process for importing lensmeter data for patient comparison during examination.

6.3 Erasing Data on the Eye Care Card

Instructions on how to erase data from the Eye Care card to prepare it for reuse.

Entering Patient ID Using Barcode Scanner

7.1 Connecting the Barcode Scanner

Procedure for connecting the optional barcode scanner to the device for patient ID entry.

7.2 Reading a Patient ID

Steps for scanning and reading patient identification barcodes for data association.

Various Settings

8.1 Setting Parameters

Guide to configuring various device parameters for customized operation and measurement.

8.2 Setting Date and Time

Procedure for setting the device's internal date and time for accurate record-keeping.

8.3 Entering Comments

Instructions on how to input custom comments for printouts and records.

8.4 Measuring Hard Contact Lenses

Specific procedures for measuring hard contact lenses using the device.

Troubleshooting Guide

Maintenance

10.1 Replacing the Printer Paper

Steps for replacing the printer paper roll when it is running short.

10.2 Setting a Stack of Chinrest Paper

Procedure for correctly setting the chinrest paper for patient comfort and hygiene.

10.3 Replacing Fuses

Instructions for safely replacing blown fuses in the device to restore power.

10.4 Cleaning the Measuring Window

Methods for cleaning the measuring window to ensure accurate measurements.

10.5 Cleaning the Exterior

Guidelines for cleaning the external surfaces of the device to maintain its appearance.

10.6 List of Replacement Parts

A list of available replacement parts and their corresponding order numbers.

Specifications

11.1 Specifications

Detailed technical specifications of the auto ref/keratometer, including ranges and accuracy.

11.2 Accessories

List of standard and optional accessories that can be used with the device.

EMC (Electromagnetic Compatibility)

Appendix A. Glossary

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Nidek Medical ARK-730A User Manual

Table of Contents

Questions and Answers:

Nidek Medical ARK-730A Specifications

Summary

Introduction

1.1 Outline of the Device

1.2 Indications for Use

1.3 Classifications

1.4 Symbol Information

Safety

2.1 Cautions in Storage, Transportation and Installation

2.2 Connecting the Device to a Wall Outlet and Handling the Power Cord

2.3 Cautions during Use

2.4 Maintenance

2.5 Disposal

2.6 Labels

Configuration

1 TV monitor

2 Display panel

3 Auxiliary button cover

4 Locking knob

Operating Procedures

4.1 Operation Flow

4.2 Auto-Off Mode

4.3 Preparation for Measurement

4.4 AR (refractive error), KM (corneal curvature radius) Measurements

4.5 CS (Corneal Size) Measurement

4.6 PS (Pupil Size) Measurement

4.7 PD (Pupillary Distance) Measurement

4.8 Measuring Sagittal Radius

Printout

5.1 Printing Measured Data

Data Transfer Using Eye Care Card System

6.1 Writing Measured Data to the Eye Care Card

6.2 Importing LM Data to be Used for the View Comparison Function

6.3 Erasing Data on the Eye Care Card

Entering Patient ID Using Barcode Scanner

7.1 Connecting the Barcode Scanner

7.2 Reading a Patient ID

Various Settings

8.1 Setting Parameters

8.2 Setting Date and Time

8.3 Entering Comments

8.4 Measuring Hard Contact Lenses

Troubleshooting Guide

Maintenance

10.1 Replacing the Printer Paper

10.2 Setting a Stack of Chinrest Paper

10.3 Replacing Fuses

10.4 Cleaning the Measuring Window

10.5 Cleaning the Exterior

10.6 List of Replacement Parts

Specifications

11.1 Specifications

11.2 Accessories

EMC (Electromagnetic Compatibility)

Appendix A. Glossary

Related product manuals