Charles Bonnet Syndrome in Patients with Open-Angle Glaucoma: Prevalence and Correlation to Visual Field Loss.

Purpose: To determine the prevalence and characteristics of Charles Bonnet Syndrome (CBS) and its relation to visual field loss (VFL) in patients with open-angle glaucoma (OAG).

Design: Prospective, cross-sectional study.

Participants: Adult patients (n = 337) with manifest OAG with verified VFL and without significant macular disease or extraocular conditions known to cause visual hallucinations.

[Complex visual hallucinations in the visually impaired, the Charles Bonnet syndrome].

Charles Bonnet syndrome (CBS) is characterised by recurrent, complex and vivid visual hallucinations in the absence of cognitive dysfunction. Individuals with CBS usually maintain insight into the unreal nature of their hallucinatory experiences. There is a strong association between CBS and acquired visual loss and the most commonly described ocular pathology is age-related macular degeneration.