cavitar y optic disc anomalies (COD A) – a disease spectrum including MGD A, megalopapilla, optic disc coloboma, and optic disc pit – are known to be inherited in an aut osomal dominant fashion thr ough mutations in the MMP19 gene [9]. Signs/Symptoms Presenting signs include decr eased vision, strabismus, nystagmus, and/or leukocoria.