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    CLEAR - Orthokeratology

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    Publication date
    2021-04
    Author
    Vincent, S.J.
    Cho, P.
    Chan, K.Y.
    Fadel, D.
    Ghorbani Mojarrad, Neema
    González-Méijome, J.M.
    Johnson, L.
    Kang, P.
    Michaud, L.
    Simard, P.
    Jones, L.
    Show allShow less
    Keyword
    Contact lens evidence-based academic reports
    CLEAR
    Orthokeratology
    Corneal reshaping
    Refractive error correction
    Myopia control
    Peer-Reviewed
    Yes
    Open Access status
    Not Open Access
    
    Metadata
    Show full item record
    Abstract
    Orthokeratology (ortho-k) is the process of deliberately reshaping the anterior cornea by utilising specialty contact lenses to temporarily and reversibly reduce refractive error after lens removal. Modern ortho-k utilises reverse geometry lens designs, made with highly oxygen permeable rigid materials, worn overnight to reshape the anterior cornea and provide temporary correction of refractive error. More recently, ortho-k has been extensively used to slow the progression of myopia in children. This report reviews the practice of ortho-k, including its history, mechanisms of refractive and ocular changes, current use in the correction of myopia, astigmatism, hyperopia, and presbyopia, and standard of care. Suitable candidates for ortho-k are described, along with the fitting process, factors impacting success, and the potential options for using newer lens designs. Ocular changes associated with ortho-k, such as alterations in corneal thickness, development of microcysts, pigmented arcs, and fibrillary lines are reviewed. The safety of ortho-k is extensively reviewed, along with an overview of non-compliant behaviours and appropriate disinfection regimens. Finally, the role of ortho-k in myopia management for children is discussed in terms of efficacy, safety, and potential mechanisms of myopia control, including the impact of factors such as initial fitting age, baseline refractive error, the role of peripheral defocus, higher order aberrations, pupil size, and treatment zone size.
    URI
    http://hdl.handle.net/10454/18651
    Version
    No full text in the repository
    Citation
    Vincent SJ, Cho P, Chan KY et al (2021) CLEAR - Orthokeratology. Contact Lens and Anterior Eye. 44(2): 240-269.
    Link to publisher’s version
    https://doi.org/10.1016/j.clae.2021.02.003
    Type
    Article
    Collections
    Life Sciences Publications

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