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2006•Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT)Open access

The Effect of Conventional and Silicone Hydrogel Contact Lenses Wear on the Tear Film

Madalena Lira, M. Elisabete C.D. Real Oliveira, Eva Yebra‐Pimentel, Joana Azeredo, Lívia Santos

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Abstract

Purpose:The aim of this study was to evaluate the effect of one conventional hydrogel and four silicone hydrogel daily wear contact lenses on the volume and stability of the tear film.The tests were performed with a group of patients with no previous contact lens experience before and after 6 months of contact lenses wear.Methods: Tear film stability and volume were monitored on 49 eyes before and after contact lenses wear.The contact lenses tested were: 10 Galyfilcon A, 7 Balafilcon A, 10 Lotrafilcon A, 7 Lotrafilcon B and 15 Etalfilcon A.

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Purpose:The aim of this study was to evaluate the effect of one conventional hydrogel and four silicone hydrogel daily wear contact lenses on the volume and stability of the tear film.The tests were performed with a group of patients with no previous contact lens experience before and after 6 months of contact lenses wear.Methods: Tear film stability and volume were monitored on 49 eyes before and after contact lenses wear.The contact lenses tested were: 10 Galyfilcon A, 7 Balafilcon A, 10 Lotrafilcon A, 7 Lotrafilcon B and 15 Etalfilcon A.

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Available abstract

Purpose:The aim of this study was to evaluate the effect of one conventional hydrogel and four silicone hydrogel daily wear contact lenses on the volume and stability of the tear film.The tests were performed with a group of patients with no previous contact lens experience before and after 6 months of contact lenses wear.Methods: Tear film stability and volume were monitored on 49 eyes before and after contact lenses wear.The contact lenses tested were: 10 Galyfilcon A, 7 Balafilcon A, 10 Lotrafilcon A, 7 Lotrafilcon B and 15 Etalfilcon A.

Key concepts: Silicone hydrogel, Contact lens, Materials science, Silicone, Lens (geology), Ophthalmology, Composite material, Medicine

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