Monozygotic twins with temporal arteritis and ophthalmic arteritis.

Temporal arteritis - ophthalmic arteritis occurring in a pair of monozygotic twins, who were 72 and 77 years of age respectively at the onset of symptoms, is reported. It is pointed out that it is rare to see, as in the first case, an improvement in an already existing severely reduced vision, in relation to corticosteroid treatment. The importance of genetic factors in temporal arteritis is discussed; further it is suggested that a possible association of the disease with tissue type antigens be the object of further study.