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Glare disability devices for cataractous eyes: a consumer's guide
A C Neumann1, G R McCarty, J Locke
1Neumann Eye Institute, DeLand, Florida 32720.
Journal of Cataract and Refractive Surgery
|March 1, 1988
Summary
Glare testing in cataract patients is crucial for assessing visual disability. The Brightness Acuity Tester (BAT) and True Vision Analyzer (TVA) most accurately predicted outdoor Snellen acuity among five tested devices.
Area of Science:
- Ophthalmology
- Vision Science
Background:
- Cataract surgery is a common procedure.
- Visual acuity is a key measure of visual function.
- Glare can significantly impair vision, especially in cataract patients.
Purpose of the Study:
- To evaluate the accuracy of five commercial glare testers in predicting outdoor Snellen acuity in cataract patients.
- To compare the performance of different glare testing devices.
Main Methods:
- Five glare testers (Miller-Nadler, BAT, TVA, VisTech VCT 8000, EyeCon 5) were assessed.
- Predicted outdoor Snellen acuity was compared to actual outdoor Snellen acuity.
- Devices were also evaluated for false positives/negatives, testing time, patient difficulty, versatility, and cost.
Main Results:
- The Brightness Acuity Tester (BAT) showed the highest accuracy (73%), followed by the True Vision Analyzer (TVA) (69%).
- VisTech VCT 8000 (56%), Miller-Nadler (47%), and EyeCon 5 (15%) demonstrated lower predictive accuracy.
- Variations in performance, testing characteristics, and cost were observed across devices.
Conclusions:
- Glare testing is essential for quantifying visual disability in cataract patients.
- Significant differences exist in the ability of commercial glare testers to predict outdoor vision.
- The BAT and TVA appear to be the most reliable devices for this purpose.