Stereo Fly Test

Brand: Stereo Optical


This Stereo Fly test is designed for the evaluation gross stereopsis and fine depth perception and is a reliable stereo vision test.

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The large image of the fly is useful for testing children, as they respond to large objects or pictures well. Test also features targets and animals for further stereo testing. Test only works with the use of the stereo glasses. This helps prevent guessing and creates a more reliable stereo vision test.


  • Recognized as the standard for stereo depth perception testing
  • Test allows easy evaluation of both gross and fine stereo vision
  • Test includes: House fly test for gross stereopsis (3500 to 40 seconds of arc), graded circle test (800 to 40 seconds of arc), animal testing for young children (400 to 100 seconds of arc), 1 pair of standard 3-D viewers, and answer key on back cover
  • This test is produced by: Stereo Optical Company, Inc. Randot is a registered trademark of Stereo Optical Company, Inc.