The possible clinical value of this test if the premises are correct, is evident; the development of an immunity would therefore warrant the continuation of conservative treatment in a case of injury while contrariwise the outbreak of sympathetic disease is a factor to be reckoned with.
Reference: Knapp A. Intradermal test with uveal pigment in traumatic irido-cyclitis. Arch Ophthalmol.1925;54:252.
A look at the past . . .. Arch Ophthalmol. 2001;119(8):1149. doi:10.1001/archopht.119.8.1149