國家衛生研究院 NHRI:Item 3990099045/15040
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/15040


    Title: Long-term effects of tear film component deposition on the surface and optical properties of two different orthokeratology lenses
    Authors: Su, CY;Yeh, LK;Huang, PH;Lin, WP;Huang, HF;Lai, CC;Fang, HW
    Contributors: Institute of Biomedical Engineering and Nanomedicine
    Abstract: Purpose: To understand the effects of long-term deposition of tear film components on the surface and optical properties of orthokeratology (ortho-k) lenses, two different lenses, Brighten 22 and Optimum Extra, were tested here. Methods: Ortho-k lenses were immersed in artificial tears and cleaned with a commercial care solution repeatedly for up to 90 days. Both the daily and accumulated lysozyme deposition amounts using an Enzyme-Linked ImmunoSorbent Assay were then analyzed. The base curve, central thickness, power, and transmission of visible light, ultraviolet A, and ultraviolet B were analyzed before and after repeated tear film component deposition procedures. The surface roughness using atomic force microscopy was observed and an energy dispersive spectrometer was used to analyze the composition of the deposits. Results: The highest levels of lysozyme were adsorbed on both lens materials during the first four days of the procedure and became saturated by day 6. For both lens materials, contamination on the lenses was easily observed by day 30, and the degree of surface roughness was higher. The transmission levels of different light spectrums were reduced showing that the optical characteristics of both lenses were also affected. Conclusions: The results provide in vitro evidence that lysozyme could not be completely removed from orthokeratology lenses. Both surface and optical properties were affected by the deposition of tear film components. However, only one commercial multipurpose care solution was used to clean the lens in this study when the main ingredient was a surfactant, and the results might be different when other care regimens with other key ingredients are used. In addition, whether tear film component deposition might result in increased risks of infection or corneal abrasion will require further investigation.
    Date: 2023-08
    Relation: Contact Lens and Anterior Eye. 2023 Aug;46(4):Article number 101852.
    Link to: http://dx.doi.org/10.1016/j.clae.2023.101852
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1367-0484&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:001032533000001
    Cited Times(Scopus): https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85158135433
    Appears in Collections:[Others] Periodical Articles

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