Around half the people presenting with acquired severe sight loss will at some point experience visual hallucinations. This is a little-known fact, not only amongst patients, but also amongst a significant number of health and eye care professionals. The condition is known as Charles Bonnet syndrome (CBS) and is named after the naturalist who first described this phenomenon in 1759. Although vi...

Charles Bonnet syndrome (CBS) is a condition related to patients with visual loss due to age related macular degeneration or glaucoma that are having complex visual hallucinations. The CBS was first described by Swiss physician Charles Bonnet in 1760. Affected patients, who are otherwise mentally healthy people with significant visual loss, have vivid, complex recurrent visual hallucinations (V...

CASE REPORT 78-year-old male patient diagnosed with Charles Bonnet syndrome (CBS) showing secondary visual deficit toward end-stage glaucoma. He progressed to amaurosis, with an abrupt disappearance of hallucinations in parallel to the loss of residual vision. DISCUSSION The paradoxical cessation of CBS occurs when the patient loses residual vision and progresses to amaurosis. The lack of sti...

Cortical blindness is characterized by impaired vision resulting from an insult to the visual cortex. Patients with cortical blindness will often present with healthy ocular structures and normal pupils, but best-corrected vision will be count fingers or worse. Cortical blindness should be suspected in cases of sudden unexplained vision loss, especially in older patients who are at risk for str...