Nidek ARK-1S Automatic Refractor Keratometer

Features

• 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.