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    Ring-shaped dysphotopsia associated with posterior chamber phakic implantable collamer lenses with a central hole

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    Author
    Eom, Youngsub
    Kim, Dae Wook
    Ryu, Dongok
    Kim, Jun-Heon
    Yang, Seul Ki
    Song, Jong Suk
    Kim, Sug-Whan
    Kim, Hyo Myung
    Affiliation
    Univ Arizona, Coll Opt Sci
    Issue Date
    2017-05
    Keywords
    central hole
    dysphotopsia
    posterior chamber phakic implantable collamer lenses
    
    Metadata
    Show full item record
    Publisher
    WILEY
    Citation
    Ring-shaped dysphotopsia associated with posterior chamber phakic implantable collamer lenses with a central hole 2017, 95 (3):e170 Acta Ophthalmologica
    Journal
    Acta Ophthalmologica
    Rights
    © 2016 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    Purpose: To evaluate the incidence of central hole-induced ring-shaped dysphotopsia after posterior chamber phakic implantable collamer lens (ICL) with central hole (hole ICL) implantation and to investigate the causes of central hole-induced dysphotopsia. MethodsThe clinical study enrolled 29 eyes of 15 consecutive myopic patients implanted with hole ICL. The incidence of ring-shaped dysphotopsia after hole ICL implantation was evaluated. In the experimental simulation study, non-sequential ray tracing was used to construct myopic human eye models with hole ICL and ICL without a central hole (conventional ICL). Simulated retinal images measured in log-scale irradiance were compared between the two ICLs for an extended Lambertian light-emitting disc object 20cm in diameter placed 2m from the corneal vertex. To investigate the causes of hole-induced dysphotopsia, a series of retinal images were simulated using point sources at infinity with well-defined field angles (0 to -20 degrees) and multiple ICL models. ResultsOf 29 eyes, 15 experienced ring-shaped dysphotopsia after hole ICL implantation. The simulation study using an extended Lambertian source showed that hole ICL-evoked ring-shaped dysphotopsia was formed at a retinal field angle of 40 degrees. Component-level analysis using a well-defined off-axis point source from infinity revealed that ring-shaped dysphotopsia was generated by stray light refraction from the inner wall of the hole and the posterior ICL surface. ConclusionHole ICL-evoked ring-shaped dysphotopsia was related to light refraction at the central hole structure. Surgeons are advised to explain to patients the possibility of ring-shaped dysphotopsia after hole ICL implantation.
    Note
    12 month embargo; First published: 28 September 2016
    ISSN
    1755375X
    PubMed ID
    27678470
    DOI
    10.1111/aos.13248
    Version
    Final accepted manuscript
    Sponsors
    SRC Program of the Center for Galaxy Evolution Research (CGER) [2010-0027910]; Korea Astronomy and Space Science Institute under the RD program [2014-9-710-03]; Busan Sungmo Eye Hospital Sodam scholarship committee
    Additional Links
    http://doi.wiley.com/10.1111/aos.13248
    ae974a485f413a2113503eed53cd6c53
    10.1111/aos.13248
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