The Frisby Near Stereo Test has 3 plates of different thicknesses, providing stereo acuity measurements in the range 600-5 sec arc. They are stored in a box with a fold-down flap that provides a clear background. A tape measure is provided for controlling eye-to-plate distance.
Frisby Stereotests have been the chosen stereopsis screening and assessment test for ophthalmologists and orthoptists across the UK and Asia since 1975
