Causes
CBS predominantly affects people with visual impairments due to old age or 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. The syndrome can also develop after bilateral optic nerve damage due to methyl alcohol poisoning.
Read more about this topic: Charles Bonnet Syndrome