My no-nonsense blind patient sees elfin kids - what's going on?

This is only the second time in my career I have seen this condition, says veteran GP
Elves

I have known him for more than 30 years. He has been legally blind for the past five.

He tends to be a practical, no-nonsense man. The other day, he seemed restless and very concerned as he lowered his voice and said:

“I don’t want you to come to the conclusion that I’m crazy, but I’m seeing things,” he began. “I’m seeing children with elfin faces...”