Charles Bonnet syndrome is a disorder that occurs especially in people who are blind or have some type of blindness. These are visual and silent hallucinations, often occurring in patients with tumor in the region of the brain responsible for vision, but this syndrome has no relation to dementia or old age.
The main feature of this syndrome, which affects individuals blind or with some visual limitation, is that it is never related to something that is familiar or memories of the past, in Charles Bonnet syndrome what you see are always color images in general, with faces almost always deformed or unrecognizable and unrelated. This type of hallucinations suddenly appear and disappear in the same way.
This syndrome was first described in the 18th century by Charles Bonnet who gave his name to the syndrome he identified.