Devine Ophthalmic

MarcoNidek ARK-730a ARK

The Marco Nidek ARK-730a is an auto ref/keratometer which contains both a refractometer and a keratometer in one unit. The refractometer objectively obtains the spherical power,cylindrical power and cylinder axis for the lens that corrects the patient’s vision into emmetropia.

The Marco Nidek ARK-730a measures the corneal curvature radius, corneal refractive power, corneal cylindrical power and corneal cylinder axis. Weak infrared rays are used for these measurements. This instrument has a main body and a measuring unit integrated on one base. On the base is a chin rest on the patient’s side and a printer on the operator’s side.

On the main body is a TV monitor and a joystick which are used to make alignment and perform operations. The measuring unit has a measuring window, through which the patient looks into to view the chart and which the infrared rays radiate on the patient’s eye. Also, there is an auto-tracking mechanism, which automatically moves the measuring unit up, down, right, left, back and forth to follow eye movement, and an auto-shot function, which automatically takes serial measurements when the instrument becomes properly in focus.

Marco has added the ARK-730A, offering several enhanced features, to its line of automated refractors/keratometers. The ARK-730A provides fully automatic alignment, tracking and focusing to ensure reliable and repeatable data for refractive measurements and keratometry.

The Marco Nidek ARK-730a also allows the operator to take peripheral keratometric measurements including sagittal radius and eccentricity values used in corneal evaluations for contact lens fitting and refractive surgery evaluations.


The MarcoNidek ARK-730a ARK:

  • Accurate Refraction & Keratometer readings
  • Auto capture and eyetracking
  • PD measurements
  • Pupil measurement capable
  • Compact design
  • Plus or Minus readout
  • Built in printer
  • Six month warranty


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