Word of the Day: Phosphene.

Noun
1. A ring or spot of light produced by pressure on the eyeball or direct stimulation of the visual system other than by light.

Example Sentences.
1. "Holly rubbed her eyes when she woke up, which caused phosphenes to form."
2. "The doctor assured her that phosphenes were perfectly normal to see when her eyes were
closed."
3. "After he sneezed several times, floating phosphenes appeared behind his eyelids."

Word Origin.
French, mid-19th century

Here's a term to ask your optometrist about: Phosphenes are the shapes and spots of light seen when the eyes are closed.