THE C901 Vision Chart with 17 inch LED backlit screen features a new and more effective CNT test. CNT curves are formed and displayed on-screen when the test is finished.

For your convenience you’ll find all the test icons on the home screen.

The C901 speeds up your workflow with a Quick Test Lists that allows you organize and launch you pick of frequently used tests.

The V-style optotype arrangement simplifies the screen layout and keeps the patient focused.

All tests icons are listed on home interface.

Advanced settings

  • The built-in software of C901 is developed on Linux platform. All the optotypes and charts are vector graph.
  • The Vision Chart supports Chinese, English, Russian, and more to come.
  • Adjust the working distance to fit your needs.
  • Set Red and green values in real time based on the clinical condition.
  • Reversible optotypes and charts are available for a mirrored room.
  • Size of image can be changed based on the working distance.
  • Gamma Calibration function brings the professional contrast sensitivity measurement.
  • Two external ports provide for an SD Card and a USB flash disk connection.
  • Plays video in AVI, MKV and MP4 formats.
  • Free software upgrades for the life of the C901
  • Wall bracket is available for mounting the unit.

Standard Accessories

  • Remote Control
  • Red-green glasses
  • Optotype card
  • Hanging Bracket
  • AC-DC Adapter
  • Power Cable

Optional Accessories

  • Desk Support
  • FIoor Stand

Send Me More Info on the Digital Vision Chart



Screen C901
Type 17 inch XGA Panel with LED backlit screen
Resolution 1280 x 1024 pixels
Brightness 80~320cd/m2
Optotypes E, C, Alphabet, Numbers, Children, Allen pictures (Normal and Uncrowded type)
Mask type Change of the background, Single mask, Horizontal mask, Vertical mask, Red/Green mask, Contrast
Decimal 0.05~2.0
Snellen(ft) 20/400~20/10
Snellen(m) 6/120~6/3
LogMAR -0.3~1.3
5-Grade 3.7~5.3
Working Distance 2m~7m (in steps of 0.1m) 6ft-24ft (in steps of 0.5ft) Low vision chart 0.4m~1.5m, in step of 0.1m
Power Supply  
Input 100-240V AC,60/50Hz
Consumption 20Watt (max)
Remote Control IR Remote, 2*AA Batteries
Dimensions 443mm x 371mm x 40mm (L/W/H)
Net Weight 3.6Kg