MedGen

A retinitis pigmentosa that has material basis in mutation in the PRPH2 gene on chromosome 6p21. [from MONDO]

Late-onset retinal degeneration (LORD) is an autosomal dominant disorder characterized by onset in the fifth to sixth decade with night blindness and punctate yellow-white deposits in the retinal fundus, progressing to severe central and peripheral degeneration, with choroidal neovascularization and chorioretinal atrophy (Hayward et al., 2003). [from OMIM]

Inability to see well at night or in poor light with onset in adulthood. [from HPO]