Nidek ARK-1S/1A/1


The large pupil zone imaging method enables the measurement of wide area refraction of up to 6 mm diameter and can indicate the difference between the wide area refraction and central area refraction of up to 3.5 mm diameter.

The system combining the Super Luminescent Diode (SLD) and highly sensitive CCD significantly improves measurement capability even in dense cataractous eyes.

Fogging allows the patient to view the target clearly and minimizes the interference with accommodation even in high astigmatism.


  • Accurate refraction measurement
  • Easy VA measurement with glare test
  • Simple opacity assessment with retroillumination image
  • Patient-friendly accommodation measurement
  • Keratometry measurement with mire ring

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