(Redirected from Charles Bonnet syndrome). Visual release hallucinations, also known as Charles Bonnet syndrome (CBS) , is the experience of complex visual hallucinations in a person with partial or severe blindness.First described by Charles Bonnet in 1760, it was first introduced into English-speaking psychiatry in 1982.entally healthy people with significant vision loss may have vivid, complex recurrent visual hallucinations (fictive visual percepts). One characteristic of these hallucinations is that they usually are  lilliputian  (hallucinations in which the characters or objects are smaller than normal).