noun. a feeling of a light flash in the absence of tangible light stimulation to the eye. It might take place with the eyes closed and can be caused by mechanical arousal of the retina, by rubbing the eyes, or by direct electrical arousal of the visual cortex. Commonly referred to as visual phosphene.

PHOSPHENE: "The patients has been experiencing phosphenes for the last hour."
Cite this page: N., Pam M.S., "PHOSPHENE," in, April 7, 2013, (accessed April 18, 2021).