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Experimental stray light in retinal densitometry

Published online by Cambridge University Press:  02 June 2009

Howard D. Baker ,
Adieren J. Watson  and
D. Caroline Coile
Howard D. Baker
Affiliation:
Psychobiology/Neuroscience Program, Florida State University, Tallahassee
Adieren J. Watson
Affiliation:
Psychobiology/Neuroscience Program, Florida State University, Tallahassee
D. Caroline Coile
Affiliation:
Psychobiology/Neuroscience Program, Florida State University, Tallahassee
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Abstract

The effects of stray light upon retinal pigment densitometric measurements were evaluated by adding specified amounts of stray light to fundus reflections. To allow for interpolations and extrapolations, a computer simulation was devised and validated against the empirical data. The results demonstrate that measured density is greatly decreased by increases in stray light but the time constant of pigment regeneration is little affected.

Keywords

Stray lightFundus reflectometryRetinal densitometryPhotopigments
Type
Research Articles
Information
Visual Neuroscience , Volume 6 , Issue 6 , June 1991 , pp. 615 - 620
Copyright
Copyright © Cambridge University Press 1991

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References

Baker, H.D., Henderson, R.. & O'Keefe, L.P. (1989). An improved retinal densitometer: design concepts and experimental applications. Visual Neuroscience 3, 71–80.Google Scholar
Baker, H.D. & Coile, D.C. (1989). Dependence of cone dark adaptation on visual pigment regeneration. Investigative Ophthalmology and Visual Science (Suppl.) 30, 14.Google Scholar
Coile, D.C. & Baker, H.D. (1990). Normal individual differences in foveal sensitivity. Investigative Ophthalmology and Visual Science (Suppl.) 31, 414.Google Scholar
Coolen, A.C.C. & Van, Norren D. (1988). Kinetics of human cone photopigments explained with a Rushton-Henry model. Biological Cybernetics 58, 123–128.Google Scholar
Ijspert, J.K., De, Waard P.W.T., Van, Den Berg T.J.T.P. & De, Jong P.T.V.M. (1990). The intraocular straylight function in 129 healthy volunteers; dependence on angle, age, and pigmentation. Vision Research 30, 699–707.Google Scholar
Kilbride, P.E., Alexander, K.R., Fishman, M. & Fishman, G.A. (1989). Human macular pigment assessed by imaging fundus reflectometry. Vision Research 29, 663–674.Google Scholar
King-Smith, P.E. (1973 a). The optical density of erythrolabe determined by retinal densitometry using the self-screening method. Journal of Physiology 230, 535–549.Google Scholar
King-Smith, P.E. (1973 b). The optical density of erythrolabe determined by a new method. Journal of Physiology 230, 551–560.CrossRefGoogle ScholarPubMed
Ripps, H., Mehaffey, L., Siegel, I.M., Ernst, W. & Kemp, C. (1981). Flash photolysis of rhodopsin in the cat retina. Journal of General Physiology 77, 295–315.Google Scholar
Rushton, W.A.H. (1965). Stray light and the measurement of mixed pigments in the retina. Journal of Physiology 176, 46–55.CrossRefGoogle ScholarPubMed
Smith, V.C., Pokorny, J. & Van, Norren D. (1983). Densitometric measurement of human cone photopigment kinetics. Vision Research 23, 517–524.Google Scholar
Van, Norren D. & Van, Der Kraats J. (1981). A continuously recording retinal densitometer. Vision Research 21, 897–905.Google Scholar