Optical performance of progressive addition lenses (PALs) with astigmatic prescription.

ABSTRACT: The progressive addition lens (PAL) is a spectacle lens design with progressive refractive power changes across the lens surface to provide sharp vision at different viewing distances for patients with reduced accommodative strength. It has gained in popularity not just for presbyopic patients, but also patients with occupational (office, driving, or digital device) and therapeutic (e.g., myopia control) needs. However, despite the increasing prevalence of astigmatism in adults > 40 years old who rely on PAL correction, no metric is available to reflect the optical variation in PALs with astigmatic prescriptions. Based on recent studies, four novel optical metrics sensitive to variation of refractive power across the lens surface of PALs have been developed. These metrics were used to comp

SUBMITTER: De Lestrange-Anginieur E 

PROVIDER: S-EPMC7862262 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature