Nidek ARK 1S Automatic Refracto Keratometer

- Accurate refraction measurement

- Large pupil zone imaging method
  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 wide area refraction and the central area refraction of up to 3.5 mm diameter.

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

- Optimal fogging to minimize accommodation (available for the ARK-1s and ARK-1a)
  The Fogging allows the patient to view the target clearly and minimizes the interference with accommodation even in high astigmatism.

- VA measurement with glare test (available for the ARK-1s)

- The ARK-1s provides visual acuity (VA) measurement. A glare source is projected beside the chart and the glare VA can be measured.

- Simple opacity assessment with retroillumination image (available for the ARK-1s and ARK-1a)

- The retro illumination image enables the observation of opacity of the optical media of the eye.

- Patient-friendly accommodation measurement (available for the ARK-1s and ARK-1a)

- Objective measurement of accommodation is performed with patient's focusing on a target which moves from distance to near.

- Keratometry measurement with mire ring

- The mire ring is used to measure keratometry. It reduces eyelid artifacts.

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