A patient with de Morsier and Duane syndromes

de Morsier syndrome, or septo-optic dysplasia, is a developmental malformat ion complex characterized by optic nerve hypoplasia, dysgenesis of the sept um pellucidum, and hypothalamic-pituitary dysfunction.(1,2) In Duane retrac tion syndrome, there is absence of the sixth nerve nucleus with congenital retraction of the globe and narrowing of the lid fissure in adduction, freq uent abduction deficiency, and variable limitation to adduction of the affe cted eye.(3) The purpose of this report is to present a patient with the un common and previously unreported concurrence of both of these congenital ma lformation complexes, presumably because of a common disturbance of neurona l development.