Visual performance after the deterioration of retinal image quality: induced forward scattering using Bangerter foils and fog filters.

Biomedical Optics Express
José J Castro-TorresCarolina Ortiz

Abstract

We induced and evaluated different levels of retinal-image degradation using Bangerter foils and fog filters. We found increased straylight and an important deterioration in visual performance, assessed by means of visual acuity, contrast threshold, and visual discrimination capacity. Bangerter foils induced forward scattering levels comparable to those observed in mature to severe cataracts, with an important impact of halos and starbursts. Fog filters induced lower levels of intraocular scattering, although luminous veils and circular halos were reported. The visual disturbance index positively correlated with intraocular scattering and straylight. Our results show retinal-image quality has an important influence on night-vision performance.

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Citations

Jul 3, 2021·International Journal of Environmental Research and Public Health·Miriam Casares-LópezCarolina Ortiz

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