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Friday / May 27.
HomeminewsCharles Bonnet Syndrome

Charles Bonnet Syndrome

Approximately one in five patients with vision loss caused by any eye disease will experience visual hallucinations, according to a study published in Canadian Journal of Ophthalmology.

Study author Professor Keith D. Gordon stated that this finding warrants greater awareness of the phenomenon among all vision health professionals and their patients.

To evaluate the prevalence of visual hallucinations (Charles Bonnet syndrome) in a national population undergoing vision rehabilitation, Professor Gordon conducted a cross-sectional study of 2,565 new clients older than 40 years who were attending a Canadian National Institute for the Blind (CNIB) vision rehabilitation clinic.

The study identified that “overall, 18.8 per cent of people surveyed indicated that they had experienced hallucinations. In the multivariable model, females showed higher odds of hallucinations than males did (odds ratio [OR] 1.32, 95 per cent CI 1.06–1.64, p = 0.02). Clients with greater vision loss had higher chances of experiencing hallucinations than those with the lowest level of vision loss (OR 1.49, 95 per cent CI 1.19–1.88, p = 0.0005)”.

“There was no significant difference in the chances of experiencing hallucinations between people with age-related macular degeneration, diabetic retinopathy, and glaucoma, or in older versus younger respondents. People who did not live alone had higher chances of experiencing hallucinations than those who lived alone (OR 1.54, 95 per cent CI 1.19–1.98, p = 0.0009).”

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