Most characteristic finding of retinitis pigmentosa –a) Ring scotomab) Peripheral field defectc) Central scotomad) Diplopia

Ring scotoma is a peripheral field defect, which is characteristic finding of retinitis pigmentosa. "Peripheral vision loss is hallmark of retinitis pigmentosa, with the classic ring scotoma 30 -50 degree from fixation" __ Pediatric retina by Hartnett. "The ring scotoma is the characteristic field defect of retinitis pigmentosa". —Harley's pediatric ophthalmology