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
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.