Mr. Marcus Gunn opened the discussion on functional (hysterical) derangements of the eye. He described the various conditions met with. In regard to diagnosis, the chief difficulty was to distinguish between this condition and malingering. He thought that in cases where neutralized glasses brought the vision up, the blindness was really assumed. Complete double amaurosis is exceedingly rare. He himself only knew of 1 case, and in this the blindness was really feigned, and it was entirely cured by suggestion.
A look at the past . . .. Arch Ophthalmol. 2007;125(10):1418. doi:10.1001/archopht.125.10.1418