Introduction: Users of yellow-tinted lenses and filters subjectively report some or all of the following benefits: increased brightness perception (≤40%; increased figure-ground ability; increased overall clarity of vision; increased patient comfort during eye exams; decreased discomfort glare.
Purpose: To investigate the mechanism of efficacy, if any, of Gunnar Optiks “digital eyewear”. Zone Quick tear film, orbicularis EMG for squinting and blink rate, as well as symptoms, were all measured.
Kundart, James; Hayes, John R.; Cooper, Scott; and Sheedy, James, "Tinted Lenses for Improving Comfort During Computer Use" (2009). Faculty Scholarship (COO). 8.