Visual release hallucinations

Visual release hallucinations
Other namesCharles Bonnet syndrome (CBS)
SpecialtyPsychiatry, ophthalmology, optometry, neurology

Visual release hallucinations, also known as Charles Bonnet syndrome or CBS, are a type of psychophysical visual disturbance in which a person with partial or severe blindness experiences visual hallucinations.

First described by Charles Bonnet in 1760, the term Charles Bonnet syndrome was first introduced into English-speaking psychiatry in 1982. A related type of hallucination that also occurs with lack of visual input is the closed-eye hallucination.

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