Correspondence
Distinguishing optic pathway glioma and retinitis pigmentosa with visual field testing
An 11-year-old boy was referred to the inherited eye disease clinic at the University of Iowa for progressive vision loss OS greater than OD over the past year. The patient denied any peripheral visual field loss, nyctalopia, or photophobia. Multiple family members of both sexes had molecularly confirmed autosomal dominant retinitis pigmentosa (RP) caused by a heterozygous Val87Asp mutation in the rhodopsin gene (Fig. 1A).
