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F1000Res. 2016 Nov 22;5:2742. doi: 10.12688/f1000research.9971.1. eCollection 2016.

Peripheral refraction with different designs of progressive soft contact lenses in myopes.

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1
Optometry and Vision Science, Faculty of Health Science, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia.

Abstract

Aim: The purpose of this study was to compare the changes in relative peripheral refractive error produced by two different designs of progressive soft contact lenses in myopic schoolchildren. Methods: Twenty-seven myopic schoolchildren age between 13 to 15 years were included in this study. The measurements of central and peripheral refraction were made using a Grand-Seiko WR-5100K open-field autorefractometer without correction (baseline), and two different designs of progressive contact lenses (PCLs) (Multistage from SEED & Proclear from Cooper Vision) with an addition power of +1.50 D. Refractive power was measured at center and at eccentricities between 35º temporal to 35º nasal visual field (in 5º steps). Results: Both PCLs showed a reduction in hyperopic defocus at periphery. However, this reduction was only significant for the Multistage PCL (p= 0.015), (Proclear PCL p= 0.830).  Conclusion: Multistage PCLs showed greater reduction in peripheral retinal hyperopic defocus among myopic schoolchildren in comparison to Proclear PCLs.

KEYWORDS:

Progressive contact lens; hyperopic defocus; myopia; peripheral retina

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