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Biomedical subjects

M P Nadler

Publications and source records attributed to M P Nadler.

4 recordsLinked to original sources
PubMed1984

Clinical performance of a disability glare tester.

A glare tester was described previously and was found, in the presence of cataracts, to be almost twice as predictive as was Snellen measurement for determining visual acuity outdoors. The current study tests the reproducibility of glare test scores and the influence of refractive error and contrast sensitivity on such scores when used in a clinical environment. Although the effects of visual acuity and impaired contrast sensitivity were found to be statistically significant components of glare test scores, the magnitudes of their effects were found to be clinically insignificant. Sequential retesting of physiologically stable eyes or, in the case of progressive cataracts, within intervals short enough to preclude discernible lenticular changes indicated that, for the most part, reproducibility of glare testing was comparable to that of visual acuity testing.

Adult↗
PubMed1984

Glare measurement as a predictor of outdoor vision among cataract patients.

Eighty-four cataractous eyes of 52 consecutive patients and 81 normal eyes of 48 subjects were evaluated with a commercially availability glare tester. Tests results were compared to visual acuity determinations in the refracting lane for ability to predict vision outdoors under daylight conditions. Among cataract patients, predictability of the two methods of measurement was not significantly different when subjects faced away from the sun. Glare scores were significantly better predictors (nearly twice as predictive) of outdoor visual acuity among cataract subjects facing the sun. These results demonstrate that measurement of sensitivity to glare is an important clinical procedure for evaluating functional visual disability in cataract patients under glare-producing conditions.

Adult↗
PubMed1982

A new glare tester for clinical testing. Results comparing normal subjects and variously corrected aphakic patients.

A simple, inexpensive, readily available, easy-to-service clinical glare tester combines an audioviewer able-top projector with a series of specially made slides. Each slide supplies a constant glare source and a variable-contrast, central target. The device was evaluated on 161 normal subjects, 144 patients with cataracts, and 110 aphakic patients whose visual acuity was corrected with spectacles or intraocular lenses. Results showed that aphakic patients, irrespective of the mode of correction, were statistically more glare sensitive than normal phakic patients. Further results confirmed earlier studies that demonstrated that glare sensitivity also increased with age in normal eyes. Broad potential exists for using this method of glare testing in industry, transportation media, and medicolegal and and clinical ophthalmologic studies.

Aged↗