Definify.com
Webster 1913 Edition
Phosphene
Phos′phene
(fŏs′fēn)
, Noun.
[Gr.
φῶσ
light + φαίνειν
to show.] (Physiol.)
A luminous impression produced through excitation of the retina by some cause other than the impingement upon it of rays of light, as by pressure upon the eyeball when the lids are closed. Cf.
After-image
.