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light reflex |
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light reflex [′līt ‚rē‚fleks] (physiology) 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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The pars tensa is intact, and there is a good light reflex at the center of the photograph. |
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