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Random dot butterfly for gross stereopsis (2500-1200 seconds of arc). Graded circle test and animal test. Includes standard 3-D glasses.
For gross stereopsis (3552 to 700 seconds of arc). Graded circle test (800-40 seconds of arc) Animal test (400-100 seconds of arc). Includes standard 3-D glasses.
Chrome reversible red-green glasses. 1 pair.
These stereograms are printed on thin cards and are suitable to give to patients for home training purposes.