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Proceedings Paper

Deficits In Visual Performance After Long-Term Light Exposure
Author(s): Harry G Sperling
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Paper Abstract

Selective loss of sensitivity to blue and green parts of the spectrum following intermit-tent, repeated exposures to intense spectral lights persists longer than three years following blue lights and between 18 and 40 days following green lights. The "blue-blindness" involves complete and sole loss of the response of the short-wavelength responsive cones. The "green-blindness" complete and sole loss of response of middle-wavelength sensitive cones. Histo-pathology of cones in a "blue-blinded" retina in comparison with cytochemical labeling of short-wavelength cones, reveals that they follow a similar distribution: are sparse in the foveola, reach a peak of about 16 percent of the cones near 1° and fall to 8-12 percent of the cones at 7°. Continuous as distinct from intermittent exposures to similar blue lights produces a wholly different pricture of gross pigment-epithelial damage with little photoreceptor degeneration.

Paper Details

Date Published: 7 October 1980
PDF: 8 pages
Proc. SPIE 0229, Ocular Effects of Non-Ionizing Radiation, (7 October 1980); doi: 10.1117/12.958789
Show Author Affiliations
Harry G Sperling, The University of Texas Health Science Center (United States)


Published in SPIE Proceedings Vol. 0229:
Ocular Effects of Non-Ionizing Radiation
David H. Sliney; Myron Lee Wolbarsht, Editor(s)

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