Fig. 4
An ultra-widefield fundus autofluorescence (FAF) image and Goldmann perimetry of an eye with retinitis pigmentosa. An increased ring of FAF is observed in the macula. In addition, the retina nasal to the optic disc shows slightly stronger FAF despite decreased FAF in the surrounding area. (arrows) This phenomenon is known as nasal sparing and is a characteristic finding in retinitis pigmentosa. The visual field results correspond well with the FAF findings