A number of inherited retinal dystrophies need to be considered in the differential diagnosis of non-syndromic retinitis pigmentosa.
Classes of inherited retinal dystrophies:
(1) progressive retinal disease
(2) stationary retinal disease
(3) inherited vitreoretinopathies
(4) chorioretinal dystrophies
(5) female carriers of inherited retinal dystrophies
Progressive retinal disease:
(1) cone-rod dystrophy
(2) cone dystrophy
(3) Leber congenital amaurosis
(4) Bietti crystalline corneoretinal dystrophy
(5) late-onset retinal degeneration
(6) macular dystrophy (Sorsby fundus dystrophy, Stargardt disease)
Stationary retinal disease:
(1) congenital stationary night blindness (CSNB; Oguchi disease, fundus albipunctatus)
Inherited vitreoretinopathies:
(1) X-linked juvenile retinoschisis
(2) enhanced S-cone syndrome
(3) Wagner syndrome (erosive vitreoretinopathy)
(4) snowflake vitreoretinopathy
Chorioretinal dystrophies:
(1) choroideremia
(2) gyrate atrophy
(3) helicoid peripapillary chorioretinal degeneration (Sveinsson chorioretinal atrophy)
(4) progressive bifocal chorioretinal atrophy
Female carriers of inherited retinal dystrophies:
(1) choroideremia
(2) ocular albinism
