Lizard Eye
Revision as of 16:04, 23 February 2010 by Clamy (talk | contribs) (New page: {{unfinished}} Common mydriatics have no effect on the reptilian eye because the iris contains skeletal rather than smooth muscle. Unlike mammals, the consensual pupillary response is abs...)
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Common mydriatics have no effect on the reptilian eye because the iris contains skeletal rather than smooth muscle. Unlike mammals, the consensual pupillary response is absent, the cornea does not contain a Descemets membrane and scleral ossicles are often present. Eyelids are usually present.
A well developed parietal eye (with a lens and retina) is found in some lizards including the Green iguana. It functions in hormone regulation.
The pupil
The pupil is usually round and relatively immobile in diurnal species and is usually slit-like in nocturnal species.