Includes: Manual and both Pediatric & Standard Polarized Viewers. Rapid test for amblyopia & strabismus using gross thru fine stereopsis. Traditional Fly image for testing gross stereopsis (4800 seconds of arc). Graded Circle Test from 400 seconds down to 20 seconds of arc. Shapes for testing children at 400, 200 & 100 seconds of arc. New technology eliminates monocular clues. Answer Key on back cover. Product reference: VI1000S Other Stereo Acuity Tests may be ordered by request.