MedGen

Retinitis pigmentosa-88 (RP88) is characterized by night blindness and constriction of peripheral visual fields, with mildly reduced visual acuity. Examination shows typical findings of RP, including attenuated retinal vessels, pale optic discs, and pigment deposits in the peripheral retinal pigment epithelium (Zobor et al., 2018; Hu et al., 2019; Albarry et al., 2019). For a discussion of genetic heterogeneity of RP, see 268000. [from OMIM]

Occult macular dystrophy (OCMD) is characterized by progressive decline of visual acuity in both eyes, associated with a normal fundus and normal fluorescein angiography. Patients have normal full-field electroretinograms (ERGs) but severely reduced focal macular ERGs, as recorded by conventional techniques using small stimuli under background illumination. OCMD patients are believed to have localized retinal dysfunction distal to the ganglion cells in the central retina (summary by Piao et al., 2000). [from OMIM]