Under suitable conditions light falling on the
eye may render visible certain objects within the eye itself. These
perceptions are called entoptical.
Entoptic images differ from optical illusions because, whereas
illusion is a phenomenon happening in the brain, entoptic phenomena
take place within the observer’s own eye. In this sense, the observer
cannot share this experience with others, because in fact the image is
caged within his eyes.
What does it mean to own an image?
And a non-image?
