[Initialphase of dark adaptation, sensibility to dazzling and diabetic retinopathy (author's transl)].

In the early stages of development the diabetic retinopathy often causes disturbances of initial-phase of the dark adaptation even if other functional defects are not evident. In a group of eyes with normal vision of 153 diabetics (296 eyes), only 55% of the cases reached results, which correspond to the norm of nyktometry.