Charles Bonnet Syndrome is an neurological disorder that James Thurber probably suffered from. Patients with this disorder usually have damage somewhere in their visual pathway - in the eye or the brain - causing them to be either completely or partially blind. Yet paradoxically, like Thurber, they start experiencing the most vivid visual hallucinations as if to "replace" the reality that is missing from their lives. Unlike many other disorders, Charles Bonnet syndrome is extremely common worldwide and affects millions of people whose vision has become compromised by glaucoma, cataracts, macular degeneration or diabetic retinopathy. Many such patients develop Thurberesque hallucinations - yet oddly enough most physicians have never heard about the disorder.