Vogt–Koyanagi–Harada disease Vogt–Koyanagi–Harada disease Vogt–Koyanagi–Harada disease (VKH), also known as Vogt–Koyanagi–Harada syndrome, uveomeningitis syndrome and uveomeningoencephalitic syndrome, is a multisystem disease of presumed autoimmune cause, that affects pigmented tissues, which have melanin. The most significant manifestation is bilateral, diffuse uveitis, which affects the eye. VKH may variably also involve the inner ear with effects on hearing, the skin, and the meninges of the central nervous system. The disease is characterised by bilateral diffuse uveitis, with pain, redness and blurring of vision. The eye symptoms may be accompanied by a varying constellation of systemic symptoms, such as auditory (tinnitus, vertigo, and hypoacusis), neurological
John Ritter known as a coloboma in his right eye. His father, Tex Ritter, was a singing cowboy/matinee star, and his mother, Dorothy Fay (née Southworth), was an actress. He had an older brother, Thomas Matthews "Tom" (born January 8, 1947). Ritter attended Hollywood High School, where he was student body president. He attended the University of Southern California and majored in psychology with plans to have a career in politics. He later changed his major to theater arts and attended the USC School of Dramatic Arts (formerly School of Theatre). Ritter was a member of Phi Gamma Delta fraternity at USC.