Photochromic lenses and indoor visual function
In this prospective, randomized, subject-masked, contralateral study, Renzi-Hammond et al tested whether a photochromic contact lens improved visual function under conditions where the lens was minimally activated. Sixty adult subjects wore the photochromic test contact lenses in one eye and the nonphotochromic control contact lens in the other. The primary endpoints were four visual function outcomes: photostress recovery time, glare disability, glare discomfort, and chromatic contrast. The minimally activated lenses improved many aspects of visual function under bright light compared with nonphotochromic lenses.
Optom Vis Sci 2020;97:7 526-530. DOI:10.1097/OPX.0000000000001537. Read the abstract