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


Compare Topcon Autorefractors

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.


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