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



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García Montero, María and Rico del Viejo, Laura and Martínez Alberquilla, Irene and Hernández Verdejo, José Luis and Lorente Velázquez, Amalia and Madrid Costa, David (2019) Effects of Blink Rate on Tear Film Optical Quality Dynamics with Different Soft Contact Lenses. Journal of Ophthalmology, 2019 . 8 p.. ISSN 2090-004X

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Official URL: https://doi.org/10.1155/2019/4921538


Objective. 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. Methods. 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). Results. 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 any of them. Conclusions. These results suggest that the tear film optical quality dynamics after wearing SCHLs for 15 days seems to undergo a slight deterioration only for lowest BR.

Item Type:Article
Additional Information:

Received 5 April 2019; Revised 27 May 2019; Accepted 10 June 2019; Published 9 July 2019

Uncontrolled Keywords:Tear film; Soft contact lenses; Contac lenses; Silicone hydrogel contact lenses; SHCLs; Blink rate patterns
Subjects:Medical sciences > Optics > Contact lenses
Medical sciences > Optics > Optometry
Medical sciences > Optics > Visual perception
ID Code:56927
Deposited On:09 Sep 2019 12:37
Last Modified:24 Sep 2019 09:10

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