title: Visual acuity loss in retinitis pigmentosa. Relationship to visual field loss.
abstract: We compared visual acuity with visual field radius in 235 patients with typical retinitis pigmentosa and no evidence of other visual acuity-limiting problems (such as cataract or foveal cystoid edema). Results show a strong relationship between visual acuity loss and proximity to the fovea of the visual field border (shortest distance from the foveal center to the border of the V-4-e isopter) for these patients. Ninety-six percent of patients with central visual field radii greater than 30 degrees have visual acuities of 20/40 or better; 32% of patients with central visual field radii smaller than 10 degrees have visual acuity of 20/40 or better.
authors.affiliation: Wilmer Eye Institute, Johns Hopkins Medical Institutions, Baltimore, MD.
authors.forename: S A
authors.initials: SA
authors.lastname: Madreperla
authors.forename: R W
authors.initials: RW
authors.lastname: Palmer
authors.forename: R W
authors.initials: RW
authors.lastname: Massof
authors.forename: D
authors.initials: D
authors.lastname: Finkelstein
mesh_terms: D006801:Humans; D012174:Retinitis Pigmentosa / Q000503:physiopathology*; D014792:Visual Acuity; D058609:Visual Field Tests; D014794:Visual Fields