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.
Farlex Partner Medical Dictionary © Farlex 2012

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).
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

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
Medical Dictionary, © 2009 Farlex and Partners


Charles, Swiss naturalist, 1720-1795.
Charles Bonnet syndrome - geriatric disorder marked by hallucinations.
Medical Eponyms © Farlex 2012
References in periodicals archive ?
Del Castillo, "Visual hallucinations: Charles Bonnet syndrome," Western Journal of Emergency Medicine, vol.
Jackson M.L., Ferencz J.(2009) Charles Bonnet Syndrome: Visual loss and hallucination.
Charles Bonnet syndrome was first described by Swiss philosopher Charles Bonnet in the 18th century He reported.
Iwamoto, "Is Charles Bonnet syndrome an early stage of dementia with Lewy bodies?" Journal of the American Geriatrics Society, vol.
Keywords: Charles Bonnet syndrome, Visual hallucinations, Pregabalin.
Identified over 250 years ago, Charles Bonnet Syndrome (CBS) remains virtually unknown by most physicians.
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.