Auto Kerato-Refractometer with Subjective and Glare Testing

5-in-1 Auto Kerato-Refractometer

The 5-in-1 KR-800S Auto Kerato-Refractometer incorporates Topcon’s Rotary Prism technology for unparalleled accuracy and consistent measurements. It features several tests, including a visual acuity (VA) check for near and far distance, contrast sensitivity testing, grid testing and glare testing. The glare testing function provided by the KR-800S can aid in the screening of cataracts, as well as confirm the objective and subjective VA under glare conditions before and after cataract surgery. The compact and user-friendly design provides quick and accurate readings with minimal training required.

Watch this quick KR-800S demo


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Comparison chart of Topcon Autorefractors

Technology that helps you save time and elevate the patient experience

Key Features

  • 5-IN-1 DEVICE – Objective and subjective refraction testing, glare test, grid chart test and contrast test
  • ROTARY PRISM TECHNOLOGY – Highly accurate refractive and keratometric measurements

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.


Objective Refractometer Mode

Sphere Range

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

Cylinder Range

0D to ±10D (0.12D/0.25D steps)

Axis Range

0° to 180° (1° /5°steps)

Minimum Measurable Pupil Diameter

Ø 2 mm

Corneal Curvature Mode

Corneal Curvature Radius

5.00 mm to 10.00 mm (0.01 mm steps)

Corneal Refraction

67.5D~33.75D (0.01D/0.12D/0.25D steps)

Refractive Index


Corneal Astigmatism

0D to ± 10D (0.12D/0.25D steps)

Corneal Astigmatism Axial Angle

0° to 180° (1° /5°steps)

Other Measurements

PD Measurement Range

20 to 85 mm (0.5 mm step)


USB (for Import), RS232C (for Export), LAN (for Export)

Other Specifications


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


16 kg

Power Supply

100-240V AC, 50-60Hz

KR-800S Brochure

Refraction Solutions Brochure