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Fabrication of Hydrophilic Surface on Rigid Gas Permeable Contact Lenses to Enhance the Wettability Using Ultraviolet Laser System

The widely used rigid gas permeable (RGP) contact lenses provide higher oxygen permeability and tear exchange rate than do soft contact lenses. However, their wettability warrants improvement to enhance the wearing comfort. This study used UV laser (wavelength = 355 nm) to modify the surface propert...

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Autores principales: Tsai, Hsin-Yi, Hsieh, Yu-Chen, Lin, Yu-Hsuan, Chang, Han-Chao, Tang, Yu-Hsiang, Huang, Kuo-Cheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6630549/
https://www.ncbi.nlm.nih.gov/pubmed/31200486
http://dx.doi.org/10.3390/mi10060394
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author Tsai, Hsin-Yi
Hsieh, Yu-Chen
Lin, Yu-Hsuan
Chang, Han-Chao
Tang, Yu-Hsiang
Huang, Kuo-Cheng
author_facet Tsai, Hsin-Yi
Hsieh, Yu-Chen
Lin, Yu-Hsuan
Chang, Han-Chao
Tang, Yu-Hsiang
Huang, Kuo-Cheng
author_sort Tsai, Hsin-Yi
collection PubMed
description The widely used rigid gas permeable (RGP) contact lenses provide higher oxygen permeability and tear exchange rate than do soft contact lenses. However, their wettability warrants improvement to enhance the wearing comfort. This study used UV laser (wavelength = 355 nm) to modify the surface properties of RGP contact lenses with materials of Boston XO(®) (Bausch & Lomb Incorporated). Briefly, the mesh pattern was fabricated on the RGP contact lens surface by using the laser and smoothed by using oxygen plasma; the enhanced hydrophilic efficiency was analyzed using contact angle measurement. The experiment results indicated that the contact angle of the lens material decreased by approximately 10°–20° when the pitch of mesh pattern was <50 μm under a 500-mm/s scanning speed. The oxygen plasma enhanced surface wettability with a decreased contact angle (40°). The hydrophilic characteristic of the UV laser and oxygen plasma–treated surface was twice that of oxygen plasma–treated and untreated surfaces. In the future, RGP contact lens edges could be treated with UV laser and oxygen plasma to enhance the tear wettability and wearing comfort.
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spelling pubmed-66305492019-08-19 Fabrication of Hydrophilic Surface on Rigid Gas Permeable Contact Lenses to Enhance the Wettability Using Ultraviolet Laser System Tsai, Hsin-Yi Hsieh, Yu-Chen Lin, Yu-Hsuan Chang, Han-Chao Tang, Yu-Hsiang Huang, Kuo-Cheng Micromachines (Basel) Article The widely used rigid gas permeable (RGP) contact lenses provide higher oxygen permeability and tear exchange rate than do soft contact lenses. However, their wettability warrants improvement to enhance the wearing comfort. This study used UV laser (wavelength = 355 nm) to modify the surface properties of RGP contact lenses with materials of Boston XO(®) (Bausch & Lomb Incorporated). Briefly, the mesh pattern was fabricated on the RGP contact lens surface by using the laser and smoothed by using oxygen plasma; the enhanced hydrophilic efficiency was analyzed using contact angle measurement. The experiment results indicated that the contact angle of the lens material decreased by approximately 10°–20° when the pitch of mesh pattern was <50 μm under a 500-mm/s scanning speed. The oxygen plasma enhanced surface wettability with a decreased contact angle (40°). The hydrophilic characteristic of the UV laser and oxygen plasma–treated surface was twice that of oxygen plasma–treated and untreated surfaces. In the future, RGP contact lens edges could be treated with UV laser and oxygen plasma to enhance the tear wettability and wearing comfort. MDPI 2019-06-13 /pmc/articles/PMC6630549/ /pubmed/31200486 http://dx.doi.org/10.3390/mi10060394 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tsai, Hsin-Yi
Hsieh, Yu-Chen
Lin, Yu-Hsuan
Chang, Han-Chao
Tang, Yu-Hsiang
Huang, Kuo-Cheng
Fabrication of Hydrophilic Surface on Rigid Gas Permeable Contact Lenses to Enhance the Wettability Using Ultraviolet Laser System
title Fabrication of Hydrophilic Surface on Rigid Gas Permeable Contact Lenses to Enhance the Wettability Using Ultraviolet Laser System
title_full Fabrication of Hydrophilic Surface on Rigid Gas Permeable Contact Lenses to Enhance the Wettability Using Ultraviolet Laser System
title_fullStr Fabrication of Hydrophilic Surface on Rigid Gas Permeable Contact Lenses to Enhance the Wettability Using Ultraviolet Laser System
title_full_unstemmed Fabrication of Hydrophilic Surface on Rigid Gas Permeable Contact Lenses to Enhance the Wettability Using Ultraviolet Laser System
title_short Fabrication of Hydrophilic Surface on Rigid Gas Permeable Contact Lenses to Enhance the Wettability Using Ultraviolet Laser System
title_sort fabrication of hydrophilic surface on rigid gas permeable contact lenses to enhance the wettability using ultraviolet laser system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6630549/
https://www.ncbi.nlm.nih.gov/pubmed/31200486
http://dx.doi.org/10.3390/mi10060394
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