Effects of Customized Progressive Addition Lenses vs. Single Vision Lenses on Myopia Progression in Children with Esophoria: A Randomized Clinical Trial
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Ophthalmology"
DOI: 10.1155/2022/9972761
Abstract: Purpose To evaluate the effect of customized progressive addition lenses (CPALs) versus single vision lenses (SVLs) on the progression of juvenile-onset myopia in children with near esophoria. Methods Ninety-three Chinese children, aged 7–14 years with… read more here.
Keywords: addition; addition lenses; myopia progression; progression ... See more keywords
Null screens to evaluate the shape of freeform surfaces: progressive addition lenses.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.434289
Abstract: We propose a method for measuring the shape of freeform surfaces such as Progressive Addition Lenses (PAL). It is based on optical deflectometry by considering a non-uniform pattern of spots computed by using the null-screen… read more here.
Keywords: freeform; progressive addition; freeform surfaces; shape freeform ... See more keywords
Shadowfocimetry: adapting the holographic principle to a manual focimeter for visualization/marking of permanent engravings in progressive addition lenses.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.454962
Abstract: Focimeters, especially manual versions, are the most used ophthalmic devices for dioptric power measurement in optometric clinical care. In the particular case of progressive addition lenses (PALs), they are used to determine far/near vision correction… read more here.
Keywords: progressive addition; addition lenses; principle manual; holographic principle ... See more keywords