2 kinds of visual memory, from "Lolita"

"There are two kinds of visual memory: one when you recreate an image in the laboratory of your mind with your eyes open . . . and the other where you instantly evoke, with shut eyes, on the dark innerside of your eyelids, the objective, absolutely optical replica of a beloved face . . . "

Lolita Ch. 3., 1st. Paragraph, p. 13 - 14;