• Twenty-one normal subjects and 26 patients with retinitis pigmentosa (RP) underwent Goldmann perimetry to ascertain both interexaminer and intraexaminer variability. The data are of value for monitoring the natural disease progression in patients with RP and for defining the tolerance limits of field variability in normal subjects.
Ross DF, Fishman GA, Gilbert LD, Anderson RJ. Variability of Visual Field Measurements in Normal Subjects and Patients With Retinitis Pigmentosa. Arch Ophthalmol. 1984;102(7):1004-1010. doi:10.1001/archopht.1984.01040030806021