Words at Play : Words For Things You Didn't Know Have Names, Vol. 2
Definition:
reflection of light from the inner surface of an eye through the pupil so that the
eye has a luminous appearance (as in a cat)
Example Sentence:
At the edge of the road, the eyeshine of deer flashed in our headlights.
About the Word:
It's easy to see how eyeshine got that name, but how does it work? Eyeshine is an effect
of the tapetum lucidum ("bright tapestry," in Latin), a layer of tissue found immediately behind or sometimes within
the retina. It's this tissue that reflects visible light back through the retina. Despite what horror movies may
suggest, humans do not have eyeshine.