Vision threshold profiles in X-linked retinitis pigmentosa

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Abstract

Absolute thresholds for blue-green and red stimuli were measured along the horizontal and vertical meridians in two patients with X-linked retinitis pigmentosa. From these data, we deduced that cones mediate detection of both stimuli in the central 10°, there is a ring scotoma in the mid-periphery, and in the far periphery rods mediate detection of both stimuli. Conclusions drawn from the psychophysical measures about rod and cone function across the retina are in point-by-point agreement with the data of a recent electron microscopic study by Szamier et al. on the retina of a 24-year-old X-linked retinitis pigmentosa patient.

Original languageEnglish (US)
Pages (from-to)426-429
Number of pages4
JournalInvestigative Ophthalmology and Visual Science
Volume18
Issue number4
StatePublished - Jan 1 1979

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems
  • Cellular and Molecular Neuroscience

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