Charles Bonnet syndrome

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Bon·net syndrome

complex visual hallucinations without attendant psychological abnormality; more common in old people with vision problems.

Charles Bonnet syndrome

An idiopathic condition characterised by complex hallucinations in otherwise normal people who have various forms of visual impairment—e.g., glaucoma, methanol poisoning, cataracts. It has been attributed to the loss of suppression of spontaneous images resulting from the lack of visual input. It was described in 1769 by the Swiss philosopher, Charles Bonnet (1720–1793).

Charles Bonnet syndrome

(sharl bo-na')
[Charles Bonnet, Swiss scientist, 1720–1793]
Complex visual hallucinations typically experienced by elderly people with profound visual impairment, such as the loss of central visual acuity in macular degeneration. Synonym: release hallucination; Synonym: visual release hallucination


Charles, Swiss naturalist, 1720-1795.
Charles Bonnet syndrome - geriatric disorder marked by hallucinations.
References in periodicals archive ?
Berrios GE, Brook P The Charles Bonnet Syndrome and the problems of visual perceptual disorder in the elderly Age Ageing 1982; 11:17-23.
Charles Bonnet syndrome was first described by Swiss philosopher Charles Bonnet in the 18th century He reported.
Keywords: Charles Bonnet syndrome, Visual hallucinations, Pregabalin.
Next is an article that discusses the impact of anxiety in persons who have visual hallucinations as a result of Charles Bonnet Syndrome, which affects many older individuals with low vision.
Identified over 250 years ago, Charles Bonnet Syndrome (CBS) remains virtually unknown by most physicians.
Charles Bonnet syndrome and visual acuity the involvement of dynamic or acute sensory deprivation.
Jalal Abuthina picked four cases of the Charles Bonnet syndrome and did a re-enactment in front of the camera to show what they might look like.
The visual hallucinations, known as Charles Bonnet Syndrome, often occur but Mrs Roberson was unaware she might develop them.
Background: The Charles Bonnet syndrome is a clinical entity characterized by the presence of visual hallucinations in geriatric patients with under-diagnosed diminished visual acuity, sometimes wrongly interpreted and treated as a psychiatric disorder.
Visual hallucinations have been reported in a variety of pathological states, including Charles Bonnet Syndrome (visual hallucinations of the blind), migraine headache, Lewy body dementia, Parkinson's disease, narcolepsy, delirium tremens, schizophrenia, use of hallucinogenic drugs, and peduncular hallucinosis (Manford & Andermann, 1998).
PES should not be confused with Charles Bonnet syndrome (CBS), which was first reported in the 18th century by Charles Bonnet who described it in his grandfather.