Sight Testing and Refraction

Colour Vision and Stereo Tests | Wirt Fly Stereo Test

Wirt Fly Stereo Test

Wirt Fly stereo test complete with spectacles

Wirt Fly Stereo Test

  • Wirt fly stereotest with polarising spectacles.
  • Consists of three stereoscopic tests employing polarised vectographs.
  • The fly dramatically demonstrates the presence of stereo vision. The other two tests provide the practitioner with results to estimate the level of stereoscopic vision.
  • The Stereo Fly SO-001 is recognized as the standard for stereo depth-perception testing, evaluating both gross stereopsis (2500 to 1200 seconds of arc) and fine depth perception.
  • The test includes:
  • - Graded circle test (800 to 40 seconds of arc) - Animal test for children (400 to 100 seconds of arc) - One pair of polarised spectacles