Topcon KR-8900 Autorefractor Keratometer – Refurbished



This used Topcon KR 8900 autorefractor keratometer has been checked and certified by an authorized Topcon technician—perfect cosmetic and working condition with 90 days warranty.

Compared with the Topcon KR-8800, it has a smaller optical head and a more ergonomically positioned screen that makes it easy to read.

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What’s included

  •  Topcon KR-8900 Autorefractor Keratometer
  • Power Cable
  • Instruction Manual

Topcon KR 8900 Specifications

Compact and Stylish Design

The compact footprint of the Topcon KR-8900 can save space and add functionality to the contemporary eye care practice.

A smaller optical head facilitates the operator’s view of the patient’s face.

An ergonomically positioned screen makes reading easy and comfortable to see

Unparalleled Accuracy

Topcon KR-8900

The unique *Rotary Prism Technology, exclusive of Topcon, allows unparalleled precision and reliability.

This system measures a wider area of the retina while permitting measurements through pupils as small as 2 mm in diameter.

*The off-centered ring target can cover areas that a small pupil may occlude. The angle of the prism enables a wider area of the retina to be measured.

Quick and Effortless Operation

  • Topcon KR-8900Simultaneous display or right/left reading allows all patient information to be instantly seen on the screen.
  • Scenic fixation target assists patients in fixating comfortably, and the auto-fogging function minimizes accommodation, increases patient comfort, and results in accurate readings.
  • Automatic measurements and printouts are available.
  • An incorporated CPU makes measurements faster and more precise. Patient comfort is enhanced.
  • Various interfaces with other Topcon instruments provide a total interconnectivity solution.

Quick and Effortless Operation

Printed Data

Topcon KR8900A complete printout of the data acquired is available at the touch of a button in the Topcon KR-8900

The operator can choose among five print data formats:

  1. ALL: Print out all measurements (up to 10 readings per eye)
  2. AVE: Prints out averaged value for all measurements
  3. GRAPHIC: Prints out illustration diagrams together with data
  4. SIM: Prints out only the average measurement value of all readings
  5. CUSTOM: Output data format can be customized according to the user’s preference

The general addition and estimated near PD value can be printed out.

Control Panel

The various modes and functions can be easily selected from the simplified control panel.

Cornea diameter measurement

Corneal diameter can be measured during testing, and the image can be recalled later. If desired, both eyes can be measured, with the data recorded on the printout (Exclusive to KR-8900)

Topcon kr 8900 print2Easy-to-load printer

Easier to load, quicker, and quieter, the incorporated printer provides clear and complete printouts. Just drop the paper roll into the holder.


Objective Refractometer Mode
Sphere Range -25D to +22D (0.12D/0.25D)
Cylinder Range 0D to +/-10D (0.12D/0.25D)
Axis range 0 to 180 deg (in 1 or 5 steps)
Minimum measurable pupil diameter 2.0 mm
Corneal Curvature Mode
Corneal curvature radius 5 to 10 mm (0.01mm)
Refraction Index 1.3375
Corneal refraction 67.5 to 33.75D (0.12D/0.25D)
Corneal Astigmatism 0D to +/10D (0.12D/0.25D)
Corneal astigmatism axial angle 0 to 180 deg (in 1 and 5 steps)
PD measurement range 20-85mm in 1 mm step
Output RS-232C/USB 1.1
Dimensions 288(W) x 509(D) x 432-462(H)mm
Weight 19.6Kg
Power Supply 100-240V AC,50/60 Hz, 75 VA

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Additional information

Weight 65 lbs
Dimensions 24 × 24 × 24 in