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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 44, Iss. 2 — Feb. 1, 1954
  • pp: 117–128

Congenital Achromatopsia: A Report of 19 Cases

LOUISE L. SLOAN  »View Author Affiliations


JOSA, Vol. 44, Issue 2, pp. 117-128 (1954)
http://dx.doi.org/10.1364/JOSA.44.000117


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Abstract

Studies were made of the visual functions of subjects with complete and incomplete achromatopsia, with particular emphasis on measurements of the rates of dark adaptation in a parafoveal region of the retina and at the fovea. When adequate preadaptation to a high luminance is achieved, the dark-adaptation curves reveal the presence of some form of photopic receptors in addition to the normal scotopic rods. Both types of receptor are present, not only in the paracentral retina, but also at the fovea.

Citation
LOUISE L. SLOAN, "Congenital Achromatopsia: A Report of 19 Cases," J. Opt. Soc. Am. 44, 117-128 (1954)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-44-2-117


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References

  1. Frank B. Walsh, Clinical Neuro-Ophthalmology (Williams and Wilkins Company, Baltimore 1947), p. 320.
  2. M. Franceschetti, Bull. mém. soc. franc. d'opht. 52, 135 (1939).
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  19. (To be published).
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  21. The hypothesis that the photopic receptors of the achromat are cones rather than rods is convincingly presented by G. L. Walls and G. G. Heath, "Typical total color blindness reinterpreted," Acta Ophthalmologica (to be published; two installments in successive issues).

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