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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 72, Iss. 8 — Aug. 1, 1982
  • pp: 1026–1028

Field sensitivity of the short-wavelength-sensitive mechanism in the protanope’s parafoveal retina

Rockefeller S. L. Young  »View Author Affiliations

JOSA, Vol. 72, Issue 8, pp. 1026-1028 (1982)

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The parafoveal short-wavelength-sensitivity mechanism in a protanopic patient with retinitis pigmentosa was found to lack the secondary (long-wavelength) field-sensitivity mode, a property that is characteristic of Stiles's pi 1 mechanism. The results document that normal protanopic observers also lack this mode and reject the hypothesis that the present measurements reflect a pi 3-like—rather than the pi 1-like—mechanism.

© 1982 Optical Society of America

Rockefeller S. L. Young, "Field sensitivity of the short-wavelength-sensitive mechanism in the protanope’s parafoveal retina," J. Opt. Soc. Am. 72, 1026-1028 (1982)

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  1. E. N. Pugh and J. D. Mollon, "A theory of the pi 1 and pi 3 color mechanisms of Stiles," Vision Res. 19, 293–312 (1979).
  2. R. Young and G. Fishman, "Sensitivity losses in a long wavelength sensitive mechanism of patients with retinitis pigmentosa," Vision Res. (to be published).
  3. R. S. Young, "Early-stage abnormality of foveal pi mechanisms in a patient with retinitis pigmentosa," J. Opt. Soc. Am. 72, 1021–1025 (1982).
  4. R. D. Watkins, "Foveal increment thresholds in protan observers," Vision Res. 9, 1197–1204 (1969).
  5. G. Wyszecki and W. S. Stiles, Color Science: Concepts and Methods, Quantitative Data and Formulas (Wiley, New York, 1967).
  6. F. M. de Monasterio, S. J. Schein, and E. P. McCrane, "Staining of blue-sensitive cones of macaque retina by a fluorescent dye," Invest. Ophthalmol. Vis. Sci. Suppl. 20, 151 (1981).
  7. J. D. Mollon and P. G. Polden, "An anomaly in the response of the eye to light of short wavelengths," Phil. Trans. R. Soc. London Ser. B 278, 207–240 (1977).

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