[Fluoroangiographic study of the retina in healthy siblings of diabetic patients]

There are still great incognites in the etiology and physiopathology of the so called chronic complications of diabetes mellitus. There are specially many questions about the origin of the diabetic microangiopathy which is the cause of several alterations like the diabetic retinopathy. Genetic, immunological and environmental factors have been involucrated in its development. In order to study the genetic involvement, in fifteen normal brothers and sisters of known diabetics type I a retina fluorangiographic study was performed. In all the cases the fluorangiography was normal suggesting that the genetic factors must coexist with the metabolic disturbance to produce retina vessels damage.