Grand Seiko GR-3500 KA Auto Ref/Keratomter. Looking for a high quality autorefractor that is easy to use and highly accurate for pre-screening then the GR-3500KA is the answer for your office.

With a newly designed optical system to autotrack and autofocus, taking measurements has never been easier.

gr 3500ka autorefractor keratometerFeatures Include:

  • 3D Auto Measurement with AutoFocus, AutoTrack, and AutoStart. The measurement is taken at the most aproppriate position without making any adjustments
  • Large tilting color LCD display
  • Fast and easy printer (with Auto Cutter)
  • Motorized chin rest
  • Measurement of Tonic Accommodation
  • Improvement of Cataract and IOL measurement
  • Measurement of Corneal Peripheral
  • Measures to a 2.2mm pupil diameter. Pupil diameter is measured simultaneously with refractive power.
  • PD Measurement. Measures the Far PD and the Near PD is calculated accordingly.



Refraction Measurement

Sphere -30~+22D (0.01/0.12/0.25DStep)
Cylinder 0~+10D (0.01/0.12/0.25DStep)
Axis angle 0~180 (1 Step)
Measurement of
Corneal Radius
Corneal radius 5.0~10.0mm (0.01mmStep)
Refractive power 33.75~67.5D(0.01/0.12/0.25DStep)
Cylindrical power 0~+9D
Axis angle 0~180 (1 Step)

Corneal Measurement

Center 3.5mm Peripheral 6.5mm
Vertex Distance 0, 10, 12, 13.5, 15mm
Minimal Pupil Diameter 2.2mm
Pupillary Distance Measurement Range 85mm (1mm Step)
Printer Thermal printer w/ Automatic Cutter (WIdth 57mm)
Internal Monitor 5.6 inch LCD Display (Color)
Moveable Distance Back/Force + 17mm Right/Left +43mm Up/Down +17mm
Moveable Distance of Chinrest +30mm
Overall Dimension (W) 260mm x (D) 465mm x (H) 463mm
Weight About 19.5kg
Output RS232C Interface; USB
Rated Voltage 100~240V ; 50/60 Hz
Consumption 90VA
Power Save OFF, 3, 5, 10min. (Selectable)



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