See Also: orbicularis phenomenon(medicine)
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orbicularis(medicine)
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orbicularis phenomenon (medicine)


orbicularis phenomenon -->
eye-closure pupil reaction


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: Galassi's pupillary phenomenon, Gifford's reflex, lid-closure reaction, orbicularis phenomenon, orbicularis pupillary reflex, Piltz sign, Westphal's pupillary reflex, Westphal-Piltz phenomenon.