Nictitating membrane

A nictitating membrane was a membranous anatomical feature of an amphibian's eyes.
In 2370, Data noted the newly-developed nictitating membranes on an apparently devolved Deanna Troi's eyes and identified her as now being an amphibian rather than a Human/Betazoid hybrid. ()
==See also==
* Inner eyelid
==External link==
*
Category:Anatomy