| Description | The Distance Randot® Stereotest is the ideal tool for the eyecare professional who deals with strabismus, amblyopia, and intermittent exotropia. This test helps detect abnormalities in distance stereopsis and thus can give an earlier indication of | The Stereo Butterfly tests and evaluates random dot stereo depth perception for both gross stereopsis (2500 to 1200 seconds of arc) and fine depth perception. The figures present on the test cannot be identified without viewing glasses. Features: |