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Red/Green Glasses, adult size, two pairs
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Plastic, 2 pairs.
1 pair red lens on right – green lens on left
1 pair red lens on left – green lens on right
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Worthmore® II Four Dot Test
This ergonomically designed handheld device features 4 peripheral porthole LEDs (Light-Emitting Diodes) and 4 central porthole LEDs with a constant brightness.
The peripheral porthole lights test for peripheral suppression; the central porthole lights test for foveal fusion/suppression.
A momentary rocker switch allows for peripheral or central testing.