April 1980
Volume 19, Issue 4
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Articles  |   April 1980
Contrast sensitivity in the presence of a glare light. Theoretical concepts and preliminary clinical studies.
Investigative Ophthalmology & Visual Science April 1980, Vol.19, 401-406. doi:
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      L E Paulsson, J Sjöstrand; Contrast sensitivity in the presence of a glare light. Theoretical concepts and preliminary clinical studies.. Invest. Ophthalmol. Vis. Sci. 1980;19(4):401-406.

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

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Abstract

A method is presented for quantitative measurements of the glare effect of light scattered in the ocular media. The contrast sensitivity function is measured with a television display system. A bright light source is introduced into the field of vision, and the resultant decrease in contrast sensitivity is mea-ured. It is further used to calculate a scattering factor which is a direct measure of the intraocular light scattering. The scattering factor shows a marked increase in patients with early cataracts even if their visual acuity is not affected.

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