The main objectives of this study are: 1. Improve genetic counseling by establishment of prevalences of each of genetic subtypes within a expanded population of patients with LCA taking into account ethnicity of families. 2. Confirm, refine or modify the genotype-phenotype correlations. 3. Edit important recommendations for: * The clinical and paraclinical exploration of a new patient based on genotype, especially for extraocular explorations, to book at certain genetic subtypes * Prenatal care of a couple. * Directing families to a therapeutic protocol in progress or in development. 4. Individualize a panel of families without a mutation in the known genes and identify new genes responsible.
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Improve genetic counseling by establishment of prevalences of each of genetic subtypes within a expanded population of patients with LCA.
Timeframe: 24 MONTHS