April 1979
Volume 18, Issue 4
Articles  |   April 1979
Vision threshold profiles in X-linked retinitis pigmentosa.
Investigative Ophthalmology & Visual Science April 1979, Vol.18, 426-429. doi:
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      R W Massof, D Finkelstein; Vision threshold profiles in X-linked retinitis pigmentosa.. Invest. Ophthalmol. Vis. Sci. 1979;18(4):426-429.

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      © ARVO (1962-2015); The Authors (2016-present)

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Absolute thresholds for blue-green and red stimuli were measured along the horizontal and vertical meridans in two patients with X-linked retinitis pigmentosa. From these data, we deduced that cones mediate detection of both stimuli in the central 10 degrees, 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.


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