NIDEK 500 Series Autorefractor/Keratometers
- 2mm Minimum Pupil Size
- Expandable Measurement Area Eliminates Pinhole Effect
- Super Luminsecent Diode Allows Measurement Through Cataracts and IOLs
- Precise Central and Peripheral Keratometry
- 3D Auto Alignment, Tracking, Focus and Acquisition (AR-530 and AR-560 Only)
NIDEK 500 Series Autorefractor/Keratometers - Including:
- ARK-510 Standard Autorefractor/Keratometer with Vertical Alignment and Auto Acquisition
- ARK-530 Advanced Autorefractor/Keratometer with 3D Alignment and Auto Acquisition
- ARK-560 Subjective Autorefractor/Keratometer with 3D Alignment and Auto Acquisition
This series of autorefractors features the Pupil Zone Measuring Method which expands the refraction measurement area from 2 mm up to 4 mm in diameter, depending on the patient's pupil size, to get the most accurate measurement.
These autorefractors also use a Super Luminescent Diode which uses a sharper, clearer measurement ring which can penetrate cataracts and IOLs.
3D Alignment (ARK-530 and ARK-560) make measurements simple for even new operators. Simply align the head with the patient's eye and the autorefractor will take over: tracking the patient's eye until optimal positioning is achieved and acquisition is triggered.
The ARK-560 allows a quick checkup of patient's refractive error by allowing monocular subjective measurements and comparing these to the objective measurement. Assessment of near correction can be performed as well.


