Abstract
The widely used Worth Dot Test indicates suppression or diplopia in many subjects who have binocular vision as shown by other tests. A Polaroid device is described which may be used for testing binocularity in a near normal environment. Polarized light is used to illuminate the target of four heart-shaped figures. The arrangement is such that when viewed through the proper Polaroid spectacles it is possible to see only half the configuration with each eye. A binocular subject sees “a flower” or “four-leaf clover.” A subject who is suppressing one eye sees “two hearts” or “two Valentines.”
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