Auto Refractometer & Auto Ref / Keratometer

AR-1 & ARK-1Product Information

2013/04/16International Sales Development Dept.,

International Div.

More than Auto Refract/Keratometer

Auto Refractometer Auto Ref/Keratometer

AR-1 & ARK-1

Copyright © NIDEK CO., LTD. All Rights Reserved.

Superior Auto Refract/Refkeratometer1. Features of New AR & ARK

1-1. Large Pupil Zone Imaging Method1-2. Accommodation Measurement 1-3. Retro illumination Image1-4. Glare Test

2. Appearance & Dimensions3. Product Lineup (Specification)

Contents

Superior Auto Refract/Refkeratometer

Every simple screening and examinationfor All Age groups

Young age: Measure the refractive value in wide pupilarea of young people’s large pupil(also for a Mesopic condition)

Middle age: Accommodation check for senior glasses

old age: Retro-illumination and glare test for cataract screening

AR central measurement (Φ1～3.5mm)+

AR wide area measurement (Φ1～6.0mm)

For (young) large pupil size person It may varies depend on Day/Night vision

Φ1～3.5mm

New: Φ1～6mm

Pupil

1-1. Large Pupil Zone Imaging Method

Copyright © NIDEK CO., LTD. All Rights Reserved.

Advantage of Wide area measurementWide area AR

valueInside AR

valueOutside AR value

(with Stiles-Crawford effect ) =+

AR valuedifference

Inside AR value

Outside AR value(Periphery data) =ｰ

1-1. Large Pupil Zone Imaging Method

Wide area AR value

AR value difference

7

While the fixation target approaches, it measures refraction continually to measure the amplitude of accommodation in 30sec.

It shows the accommodative insufficiency and decline of amplitude of accommodation objectively.

If accommodation is saturated, target is moving slower and then stop the measurement for saving time by Artificial Intelligence.

1-2. Accommodation Measurement

Prediction of PresbyopiaMay find: Pseudomyopia

AsthenopiaAccommodative spasmAccommodative palsy

8

1-3. Retro illumination Image

Central 3mm area opacity index (Height and Area) and Peripheral opacity index.

The shadow on lenticular can be observed like retinoscopy.Opacity indication helps to predict the progression of Cataract.

WHO Grade-0 Grade-1 Grade-2 Grade-3

COR Less 1/8 Less 1/4 Less ½ ½ More

PSC Less 1mm Less 2mm Less 3mm 3mm more

• Posterior subcapsularcataract (PSC)

• Nuclear cataract • Cortical cataract

9

1-4. Glare Test

Responding to the market needs, glare test has been incorporated to subjective measurement as standard(AR-1s & ARK-1s only).

Confirm the influence to visual acuity of dynamic scattering by the lenticular opacity.

Copyright © NIDEK CO., LTD. All Rights Reserved.

2. Appearance & Dimensions

260(W) × 495(D) × 457(H) (mm)6.5 inch color / tilting LCD panel

Copyright © NIDEK CO., LTD. All Rights Reserved.

3. Product Lineup & SpecificationFunction AR-1s AR-1a AR-1

Accommodation Measurement ● ● －

Retro illumination Image ● ● －

Print out retro illumination image ● ● －

Auto-pupil size measurement ● ● ●

VA measurement ● － －

Glare Test ● － －

AR-1 Series

Function ARK-1s ARK-1a ARK-1

Accommodation Measurement ● ● －

Retro illumination Image ● ● －

Print out retro illumination image ● ● －

Auto-pupil size measurement ● ● ●

VA measurement ● － －

Glare Test ● － －

ARK-1 Series

Copyright © NIDEK CO., LTD. All Rights Reserved.

3. Product Lineup & SpecificationAR-1 Series

AR-1s AR-1a AR-1 AR-360A AR-330A AR-310A

w/ Subjectiverefraction Auto model Basic model

w/ Subjectiverefraction Auto model Basic model

Measurement method Large Pupil ZoneImaging Method

Large Pupil ZoneImaging Method

Large Pupil ZoneImaging Method

Pupil ZoneImaging Method

Pupil ZoneImaging Method

Pupil ZoneImaging Method

SPH -30 to +25 D -30 to +25 D -30 to +25 D -30 to +25 D -30 to +25 D -30 to +25 DCYL 0 to ±12 D 0 to ±12 D 0 to ±12 D 0 to ±12 D 0 to ±12 D 0 to ±12 DMinimum pulil diametermeasurable 2.0mm ○ ○ ○ ○ ○ ○

Ring image observation ○ ○ ○ ○ ○ ○Accommodation Measurement ○ ○ － － － －

Retro illumination Image ○ ○ － － － －

Print out retro illumination Image ○ ○ － － － －Auto-pupil size measurement ○ ○ ○ － － －VA measurement ○ － － ○ － －Glare Test ○ － － － － －View comparison function ○ ○ － ○ ○ －

Correction with S&C ○ ○ － ○ － －

X , Z direction ○ ○ － ○ ○ －Y direction ○ ○ ○ ○ ○ ○Auto-shooting ○ ○ ○ ○ ○ ○Motorized chinrest ○ ○ ○ ○ ○ ○Monitor 6.5'color LCD 6.5'color LCD 6.5'color LCD 5.7'color LCD 5.7'color LCD 5.7'color LCD

Tilt mechanism ○ ○ ○ ○ ○ ○Connector RS232C ○ ○ ○ ○ ○ ○

LAN ○ ○ ○ ○ ○ ○

Eye care card ○ ○ ○ ○ ○ ○Easy loading&auto cutterline printer ○ ○ ○ ○ ○ ○

Auto-tracking

User interface

Category

Functions / Models

AR measurement

VA measurement

Copyright © NIDEK CO., LTD. All Rights Reserved.

3. Product Lineup & SpecificationARK-1 Series

ARK-1s ARK-1a ARK-1 ARK-560A ARK-530A ARK-510A

w/ Subjectiverefraction Auto model Basic model w/ Subjective

refraction Auto model Basic model

Measurement method Large Pupil ZoneImaging Method

Large Pupil ZoneImaging Method

Large Pupil ZoneImaging Method

Pupil ZoneImaging Method

Pupil ZoneImaging Method

Pupil ZoneImaging Method

SPH -30 to +25 D -30 to +25 D -30 to +25 D -30 to +25 D -30 to +25 D -30 to +25 DCYL 0 to ±12 D 0 to ±12 D 0 to ±12 D 0 to ±12 D 0 to ±12 D 0 to ±12 DMinimum pulil diametermeasurable 2.0mm ○ ○ ○ ○ ○ ○

Ring image observation ○ ○ ○ ○ ○ ○

Accommodation Measurement ○ ○ － － － －

Retro illumination Image ○ ○ － － － －

Print out retro illumination Image ○ ○ － － － －

Auto-pupil size measurement ○ ○ ○ －(Manual) －(Manual) －(Manual)

VA measurement ○ － － ○ － －

Glare Test ○ － － － － －

View comparison function ○ ○ ○ ○ ○ ○

Correction with S&C ○ ○ － ○ － －

KM 5 to 13 mm 5 to 13 mm 5 to 13 mm 5 to 13 mm 5 to 13 mm 5 to 13 mmKM CYL 0 to ±12 D 0 to ±12 D 0 to ±12 D 0 to ±12 D 0 to ±12 D 0 to ±12 D

KM sagittal measurement ○ ○ ○ ○ ○ ○

KM peripheral (φ6) － － － ○ ○ ○

Auto-corneal size measurement ○ ○ ○ －(Manual) －(Manual) －(Manual)X , Z direction ○ ○ － ○ ○ －

Y direction ○ ○ ○ ○ ○ ○

Auto-shooting ○ ○ ○ ○ ○ ○

Motorized chinrest ○ ○ ○ ○ ○ ○

Monitor 6.5'color LCD 6.5'color LCD 6.5'color LCD 5.7'color LCD 5.7'color LCD 5.7'color LCDTilt mechanism ○ ○ ○ ○ ○ ○

Connector RS232C ○ ○ ○ ○ ○ ○

LAN ○ ○ ○ ○ ○ ○

Eye care card ○ ○ ○ ○ ○ ○Easy loading&auto cutterline printer ○ ○ ○ ○ ○ ○

User interface

AR measurement

VA measurement

Auto-tracking

KM meamurement

Category

Functions / Models

Superior Auto Refract/Refkeratometer

Every simple screening and examinationfor All Age groups

can be done with new AR/ARK-1s.