American ophthalmologist, born in 1908 in Fall River, Massachusetts; died on September 9, 1993, Bethesda. During his long career, Cogan won many awards. These include the Warren Award in 1944, the Proctor Award in 1954, the Mackenzie Prize in 1968, the 1989 Prevention of Blindness Research Award, and the 1974 Gonin Medal. Cogan sign in patients with muscle weakness: Cogan's eyelid convulsions. When the patient's eyes are directed downward for 10 to 20 seconds, then the patient is instructed to make a vertical eye jump back to the original position, the upper eyelids rise, either begin to sag slowly or twitch several times in a stable position. Cogan-Reese disease: a symptom characterized by a mass or smear on the surface of the iris, unilateral glaucoma with multiple peripheral anterior adhesions, multiple nodules in the iris, and ectopic Descemet's meet in the first two years of medical school.