Optical performance of progressive addition lenses ... | 合法醫療器材資訊網

由EDeLestrange-Anginieur著作·2021·被引用1次—Abstract.Theprogressiveadditionlens(PAL)isaspectaclelensdesignwithprogressiverefractivepowerchangesacrossthelenssurfaceto ...

To compare the influence of astigmatic axis on lens optics, different designs of PALs from three lens manufacturers (Essilor, Hoya, and Zeiss) with identical addition powers (+ 2.00D), but with cylindrical axis of orthogonal direction (i.e., 90 vs. 180), were tested. Because myopia (or short-/near-sightedness) is increasing in prevalence worldwide, especially in East Asian population20), distance prescriptions of PALs were based on the characteristics of refractive error reported in a recent study on the Hong Kong Chinese clinical population21: − 4.00 DS, − 4.00 DS/− 2.00 DC × 90, and − 4.00 DS/− 2.00 DC × 180. For each lens manufacturer, two popular PAL models with two different progressive corridors were included (see Table 1). A total of 12 lenses from each lens manufacturer (3 prescriptions × 2 models × 2 corridor lengths) were provided in-kind for measurement. All l...