Comparing Different Types
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P136: Comparing Different Types of Spectacle Lenses designed to Myopia Control: Acceptance, Efficacy and Visual Performance.
Escandón-García S1 , Lopes-Ferreira D2 , Jorge J2
1-GrandVision EyeCare Council,
2-Clinical and Experimental Optometry Research Laboratory (CEORLab), Physics Center of Minho and Porto Universities (CF-UM-UP), School of Sciences, University of Minho
Purpose:
Recently arrived to market new spectacle lenses designed to prevent myopia progression. The aim of this work was to analyze of most recent clinical trials evaluating different spectacle lenses at level of myopia retention efficacy and also visual performance, accommodation facility and binocular function in children.
Methods:
A search was performed using PubmedCentral and including all randomized clinical trials (RCT) that were found in search by “spectacle lenses to myopia control”. Results were filtered and only the results from the last 10 years were included. Results including bifocals, orthokeratology, atropine or progressive addition lenses (PALS) reports were excluded.
Results:
Total of 4 types of lenses designed to prevent myopia progression were identified: Peripheral Defocus Management (PDM) commercialized by CarlZeiss as MyoVision, Defocus Incorporated Multiple Segments (DIMS) commercialized by Hoya as MiYOSMART, Highly Aspheric Lenslets (HAL) commercialized by ESSILOR® as Stellest and Perifocal (PF) commercialized by INDO as SuperKid Miofocal (Iberia) or FRAMETEC Perifocal (Germany). At this time, duration of studies varies between 1 (HAL) and 5 years (Perifocal). The efficacy in myopia retention determined by refractive error was 15%, 52%, 63% and 60% respectively using PMD, DIMS, HAL and PF. Not verified significant differences in distance and near VA high contrast between DIMS, HAL and PF comparing Single Vision (SV). Binocular function and accommodation not significantly varied with DIMS and HAL comparing with SV.
Conclusions:
Most recent and efficient spectacle lenses designed to avoid myopia progression reveals positive tolerance and acceptance by children and demonstrated lower impact on both visual acuity and contrast sensitivity. Although the levels of scientific evidence are limited, there are notable contributions to preventing the progression of myopia with ophthalmic lenses designed for this purpose.