Charles Bonnet syndrome (CBS) is a common condition among people who have lost their sight. It causes people who have lost a lot of vision to see things that aren't really there, known as visual hallucinations. Many people with this condition are afraid to admit it because they don't want to be labeled as crazy. The kinds of things people see with CBS hallucinations seem to fall into two broad types: simple repeated patterns or complex hallucinations of people, objects and landscapes. Both kinds of hallucination can vary. Sometimes they may be in black and white and at other times in color, or they may move or stay still.
It is amazing to see how our brain works and how it can compensate for the lost of certain abilities.