July 2019
Volume 60, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2019
The Changes of Higher-order Aberrations After Wearing Orthokeratology Lens
Author Affiliations & Notes
  • Jae Yong Kim
    University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea (the Republic of)
  • In Kyun Hahn
    University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea (the Republic of)
  • Dong Ho Lee
    Bitsarang Eye Clinic, Seoul, Korea (the Republic of)
  • Hungwon Tchah
    University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea (the Republic of)
  • Footnotes
    Commercial Relationships   Jae Yong Kim, None; In Kyun Hahn, None; Dong Ho Lee, None; Hungwon Tchah, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science July 2019, Vol.60, 6360. doi:
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    • Get Citation

      Jae Yong Kim, In Kyun Hahn, Dong Ho Lee, Hungwon Tchah; The Changes of Higher-order Aberrations After Wearing Orthokeratology Lens. Invest. Ophthalmol. Vis. Sci. 2019;60(9):6360.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : To investigate the changes in higher-order aberrations (HOAs) after wearing orthokeratology (OK) lenses in myopic patients.


Methods : The study was carried out by restrospective chart review and included 15 eyes from ten myopic patients, whose refractive error was equal or higher than -4.5 diopters (D). Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA) were measured, and auto-refraction, topography, and Zywave®aberrometry were performed at baseline and 1, 3, and 6 months following OK lens wear.

Results : The mean age was 11.5years (range: 9–15 years), and the OK lenses were well-tolerated in all subjects. There was a significant improvement in UCVA (P<0.001) and decrease in spherical equivalent measured with auto-refraction at 6 months (P<0.001). Total HOAs significantly increased after OK lens wear (P<0.001), with spherical aberration increasing approximately 3.9-fold (P=0.05). Defocus and 0° astigmatism significantly decreased (P<0.001 and P=0.008, respectively). Vertical coma and quadrafoil significantly increased in the negative direction at 1 month, and then stabilized at 3 months (P=0.01 and P=0.03, respectively). No statistically significant changes were found in 45° astigmatism, horizontal coma, trefoil,and secondary astigmatism.

Conclusions : After wearing properly prescribed OK lens, all subjects had significantly improved UCVA and decreased myopic spherical equivalent, with increased total HOAs and positive spherical aberration at 1 month, and the changes were maintained at 6 months.

This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.

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