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Definition: a constriction of both pupils when an effort is made to close eyelids forcibly held apart; a variant of the pupil response to near vision.
Synonym(s): Galassi pupillary phenomenon, Gifford reflex, lid-closure reaction, orbicularis phenomenon, orbicularis pupillary reflex, Piltz sign, Westphal pupillary reflex, Westphal-Piltz phenomenon
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