Auto Kerato-Refractometer

Reliable Decision Support with Precise Data

The KR-800 Auto Kerato-Refractometer is compact and easy to use. It features Topcon’s Rotary Prism technology for highly accurate measurements and a simple, intuitive display.

Watch this quick KR-800 demo


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Comparison chart of Topcon Autorefractors

Technology that helps you save time and elevate the patient experience.

Key Features

  • 70+ YEARS OF REFRACTOMETERS – With over 70 years of experience designing and manufacturing high-performance refractometers, Topcon has developed the KR-800 with ease of use, flexibility, and reliability as core features.
  • EASY-TO-USE – 8.5 inch color touchscreen panel and joystick allow for quick and easy capture.
  • COMPACT FOOTPRINT – Space-saving design enables the KR-800 to be installed in many different exam room configurations
  • ROTARY PRISM TECHNOLOGY – Highly accurate refractive and keratometric measurements.
  • EMR CONNECTIVITY – Easily transport data across USB or LAN export for fast EMR connectivity.

Not all products, services or offers are approved or offered in every market, and products vary from one country to another. Contact your local distributor for country-specific information.


Refractive Power Measuring Range

Spherical Refractive Power

-25D to +22D (0.01D/0.12D/0.25D steps)

Cylindrical refractive power

0D to +10D (0.12D/0.25D steps)

Astigmatic Axial Angle

0° to 180° (1° /5°steps)

Minimal Measurable Pupil Diameter

Ø 2 mm

Corneal Curvature Measuring Range

Corneal Curvature Radius

5.00 mm to 10.00 mm (0.01 mm steps)

Corneal Refractive Power

67.50D to 33.75D (0.12D/0.25D steps)
(where, corneal refractive power =1.3375)

Corneal Astigmatic Refractive Power

0D to ± 10D (0.12D/0.25D steps)

Corneal Astigmatic Axial Angle

0° to 180° (1° /5°steps)

PD Measurement Range

20 to 85 mm (0.5 mm step)

Data Transport Terminal

USB (import) /RS-232C (Export)/ LAN (Export)


317-341mm (W) X 521-538mm (D) X 447-477 mm (H)


15 kg

Power Supply

100-240V AC, 50-60Hz, 30-70VA

KR-800 Brochure

Refraction Solutions Brochure