Who is Charles Bonnet?  He was a Swiss naturalist, philosopher, and biologist (1720-1793) who first described the hallucinatory experiences of his 89-year-old grandfather, who was nearly blind in both eyes from cataracts.  Charles Bonnet Syndrome is now the term used to describe simple or complex hallucinations in people who have impaired vision.  

Symptoms

People who experience these hallucinations know they aren't real.  These hallucinations are only visual, and they don't involve...

We commonly see patients who come in saying that their eyes are bleeding.

The patient is usually referring to the white part of their eye, which has turned bright red. The conjunctiva is the outermost layer of the eye and contains very fine blood vessels.  If one of these blood vessels breaks, then the blood spreads out underneath the conjunctiva. This is called a subconjunctival hemorrhage.

A subconjunctival hemorrhage doesn't cause any eye pain or affect your vision in any way. Most...