Effects of Blink Rate on Tear Film Optical Quality Dynamics with Different Soft Contact Lenses

Journal of Ophthalmology
María García-MonteroDavid Madrid-Costa

Abstract

The aim of this study was to investigate tear film optical quality dynamics for four types of silicone hydrogel contact lenses (SHCLs) for daily wear over a 15-day period and for different blink rate (BR) patterns. A prospective randomized, double-blind, cross-over pilot study including four SHCLs (A: lotrafilcon B (Air Optix plus HydraGlyde, Alcon Laboratories); B: samfilcon A (Ultra, Bausch & Lomb); C: comfilcon A (Biofinity, CooperVision); and D: filcom V3 (Blu:gen, Mark'Ennovy)). Serial measurements of Objective Scatter Index (OSI) using the HD Analyzer (Visiometrics S.L., Terrassa, Spain) were taken at different blinking patterns: blinking every 2.5 seconds (high BRs) and every 9 seconds (low BRs). They were performed during the first visit before CL insertion (baseline), after 20 minutes of CL wear (Day 1), and during the last visit after 8 hours of CL wear on day 15 of use (Day 15). Normal young healthy subjects were recruited and fitted with the four lenses. For low BRs, the mean OSI value increased over time for all CLs and the slope of the curve also increased for all CLs, except for CL D. However, for high BRs, the mean OSI value increased only for CLs B and C and the slope of the curve did not change over time for a...Continue Reading

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Citations

Mar 11, 2021·Clinical & Experimental Optometry : Journal of the Australian Optometrical Association·José Vicente García-MarquésJosé Manuel González-Méijome
Mar 30, 2021·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Philip B MorganMark Willcox
Mar 30, 2021·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Fiona StapletonJames S Wolffsohn

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Methods Mentioned

BETA
MDS

Software Mentioned

SAS
Tear Film Analysis

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