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


Compare Topcon Autorefractors

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


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