| Autor: |
Lisa M. Renzi-Hammond, John Buch, Jie Xu, Billy R. Hammond |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Eye & Contact Lens: Science & Clinical Practice. 48:516-520 |
| ISSN: |
1542-2321 |
| DOI: |
10.1097/icl.0000000000000935 |
| Popis: |
Glare discomfort (GDC) is the slight pain (discomfort) that arises when exposed to light that exceeds one's adaptive state. Such light can also cause a temporary loss in visual function (photostress, PS). We tested the hypothesis that filtering with a high-energy visible (HEV) light-filtering contact lens can reduce GDC and speed PS recovery time.Sixty-one subjects were randomized and fit with study lenses and 58 subjects completed as cohort (20-65 years of age). A double-masked, randomized, contralateral design was used (HEV filter on one eye; control lens on the other). Participants were given a 5-s exposure to a broadband white photostressor. Video images were analyzed, and palpebral fissure size during exposure was measured, as was PS recovery time to a 2-degree mid-wave target.The HEV-filtering test lens was statistically superior ( P0.0001) to the clear comparison contact lens with respect to the magnitude of squint (44.9% squint reduction) and photostress recovery time (24.3% faster recovery).High-energy visible light-filtering contacts can reduce GDC and speed PS recovery. Filtering HEV light before it is incident upon the retina is a natural strategy (e.g., by the lens and macular pigment) for attenuating some of the deleterious effects of bright broadband light. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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