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These stereograms are printed on thin cards and are suitable to give to patients for home training purposes.
Random dot butterfly for gross stereopsis (2500-1200 seconds of arc). Graded circle test and animal test. Includes standard 3-D glasses.
Lea symbols. Graded circle test from 400 sec now down to 20 sec. Answer key on back cover. Includes adult and pediatric veiwers.
The Lang Stereo Test is used to screen stereopsis in children. No polarized or red/green glasses are needed. The test includes animal pictures viewed at 16″ (40 cm). Simple shapes have to be detected. Disparity Star: 600″ Cat: 400″ Car: … Continued