The prevalence and clinical characteristics of Charles Bonnet Syndrome in Danish patients with neovascular age-related macular degeneration

Research output: Contribution to journalArticle


PURPOSE: To investigate the prevalence and clinical characteristics of the Charles Bonnet Syndrome (CBS) in a group of Danish patients with neovascular age-related macular degeneration (AMD) and to study whether CBS is associated with a specific retinal morphology.

METHODS: Three-hundred consecutive patients with neovascular AMD attending assessment consultations following variable series of ranibizumab therapy were actively asked whether they had symptoms of CBS. If they responded positively, a detailed questionnaire was orally administered to inquire into the details of the symptoms. Detailed optical coherence tomography and autofluorescence was performed. A comparison was made between retinal morphology of a randomly selected equal number of patients without CBS to patients with CBS.

RESULTS: Twenty-five (8.3%) patients of 300 had hallucinations attributable to CBS. The median lesion size - measured as total area with increased autofluorescence - in the CBS group (median 14.2 mm(2)) was not significantly different from the non-CBS group (median 16.2 mm(2)); however, the patients with CBS had significantly larger areas of geographic atrophy (median 2 mm(2)) compared to patients without CBS (median 0.3 mm(2)) (p = 0.002).

CONCLUSION: CBS is not uncommon in an unselected population with neovascular AMD, and symptoms of CBS may be associated with larger areas of geographic atrophy.


External organisations
  • Copenhagen University Hospital
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Ophthalmology


  • Aged, Aged, 80 and over, Denmark/epidemiology, Female, Geographic Atrophy/complications, Hallucinations/diagnosis, Humans, Male, Prevalence, Surveys and Questionnaires, Syndrome, Tomography, Optical Coherence, Vision, Low/diagnosis, Visual Acuity/physiology, Wet Macular Degeneration/complications
Original languageEnglish
Pages (from-to)476-80
Number of pages5
JournalActa Ophthalmologica
Issue number5
Publication statusPublished - 2012 Aug
Publication categoryResearch
Externally publishedYes

Bibliographic note

© 2010 The Authors. Acta Ophthalmologica © 2010 Acta Ophthalmologica Scandinavica Foundation.