light reflex(redirected from Wilde triangle)
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light reflex[′līt ‚rē‚fleks]
The postural orientation response of certain aquatic forms stimulated by the source of light; receptors may be on the ventral or dorsal surface.
The response in which the pupil dilates when light levels are lowered, and constricts when light levels are raised.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.