Requires refractor equipped with polarizing filters
Grey high contrast screen (silvered projector screen) recommended for optimum performance
P/N 1234 ADULT Vectographic
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Sloan Letters Monocular 20/100 – 20/15 (9 Lines)
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A stigmatic Clock
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Acuity Balance 20/30 – 20/20 (3 Lines)
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Acuity Suppression 20/40 – 20/25 (3 Lines)
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Sloan Letters Binocular 20/30 – 20/15 (4 Lines)
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Fixation Disparity (with/without Fusion Lock)
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Stereopsis 260 – 73 seconds of arc
P/N 1246 PEDIATRIC Vectographic
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Tumbling E Monocular 20/100 – 20/15 (9 Lines)
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Acuity Balance 20/30 – 20/20 (3 Lines)
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Tumbling E Binocular 20/30 – 20/15 (4 Lines)
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Fixation Disparity (with Fusion Lock)
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Stereopsis 215 – 40 seconds of arc