[Blindtlk] Charles Bonnet syndrome

[seville allen]

Below is what wickipedia has to say about the syndrome: 

Charles Bonnet syndrome - Wikipedia, the free encyclopedia

Charles Bonnet syndrome
>From Wikipedia, the free encyclopedia

Charles Bonnet syndrome (CBS) is named after the 
Swiss 
naturalist 
Charles Bonnet
. In 
1760
 he described a condition in which vivid, complex visual 
hallucinations
 (fictive visual percepts) occur in 
mentally healthy
 people. One characteristic of these hallucinations is that they usually are
"
lilliput
 hallucinations" (hallucinations in which the characters or objects may be
smaller, larger, or regular size). He first documented it in his 89-year-old
grandfather, who was nearly blind from 
cataracts
 in both 
eyes
 but perceived men, women, birds, carriages, buildings, tapestries, and
scaffolding patterns.

Most who are affected by this are people with 
visual impairments
 due to old age, damage to the 
eyes
 or 
optic pathways
. In particular, central vision loss due to a condition such as 
macular degeneration
 combined with peripheral vision loss from 
glaucoma
 may predispose to CBS, although most people with such deficits do not
develop the syndrome.

This syndrome is well portrayed in 
Vilayanur S. Ramachandran
's book Phantoms in the Brain.