Genetic Study of Patients Suffering From Congenital Amaurosis of Leber or From an Early Severe Retinal Dystrophy

realization of a family tree

refractometry

evaluation of the presence of a nystagmus

ocular behavior

test of baby vision

test of keenness

reading test

visual field

color vision

electroretinographical activity

biomicroscopical test

retinal imaging

retinal autofluorescence

genotyping