[Mixed photoreceptor dystrophy. Apropos of two cases]. / Dystrophie mixte des photorécepteurs. A propos de deux cas.

Two observations of cone-rod dystrophy are reported. It's about two brothers. The transmission way is not defined. The extinction of the scotopic ERG and the final threshold of the rod in dark adaptation shows the rod participation in this disease. In this case, the characteristics of the progressive cone dystrophy (photophobia, achromatopsia, visual capacity loss, respect of the peripheric visual field, alteration of the photopic ERG) are seen. Fundus examination and angiography are discussed and reported to the vitreofluorometry.