IN A REVIEW of the visual field records of some 3,000 cases accumulated at the Charlotte Eye, Ear and Throat Hospital since 1928, it was observed that these included a surprising number of cases of pericentral ring scotomas.1 Larger ring scotomas, of the sort familiar in retinitis pigmentosa and of the nerve fiber bundle type, appeared less frequently. This is certainly due largely to the fact that visual field studies were not made routinely. When the diagnosis was obvious and visual field studies could be expected to contribute little, if anything, concerning the prognosis or progress of the disease process, field studies were omitted. Many patients with retinitis pigmentosa, for instance, were seen without field studies being made. Patients referred for consultation, and those whose symptoms were not explained by ophthalmoscopic or refractive findings, were sent for field studies when possible. Moreover, repeated field studies were made only when
STOLL MR. PERICENTRAL RING SCOTOMA. Arch Ophthalmol. 1950;43(1):66–91. doi:10.1001/archopht.1950.00910010071006
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