Although Cole's article was published sometime ago,1 it was brought to our attention only recently during the weekly journal review by one of our senior house officers. Myself and my other neurological colleagues are left with little doubt that the symptoms of visual hallucinations experienced by Cole is due to the Charles Bonnet syndrome (CBS).

This syndrome comprises the triad of visual hallucinations, visual sensory deprivation, and preserved cognitive status. The visual hallucinations in CBS may persist on eye closure (unlike the visual hallucinations of …