Stereopsis Test: Tests and evaluates stereo depth perception for both gross stereopsis evaluation (500 & 250 seconds of arc) using six geometric forms from random dot backgrounds  Graded circle test (400 to 20 seconds of arc) Test includes: • 1 pair of Standard 3-D Viewers • Answer key on back cover

Stereopsis Test: • Evaluate both gross stereopsis (355 to 700 seconds of arc) and fine depth perception • Graded circle test (800 to 40 seconds of arc) • Animal test for children (400 to 100 seconds of arc) Test includes: • 1 pair of Standard 3-D Viewers • Answer key on back cover