J Korean Ophthalmol Soc > Volume 60(7); 2019 > Article
Journal of the Korean Ophthalmological Society 2019;60(7):620-626.
DOI: https://doi.org/10.3341/jkos.2019.60.7.620    Published online July 15, 2019.
Comparison of Myopic Progression before and after Orthokeratology Lens Treatment.
Ho Gil Jung, Kyoung Yong Lee, Gi Hyun Bae
Department of Ophthalmology, Sahmyook Medical Center, Seoul, Korea. eddc99@gmail.com
각막굴절교정렌즈 착용 전후 근시 진행의 변화
정호길⋅이경용⋅배지현
삼육서울병원 안과
Correspondence:  Gi Hyun Bae,
Email: eddc99@gmail.com
Received: 19 November 2018   • Revised: 3 January 2019   • Accepted: 25 June 2019
Abstract
PURPOSE
To compare the myopic progression before and after wearing an orthokeratology lens (OK). METHODS: Twenty-six patients (49 eyes) with at least 6 months of myopia prior to OK treatment were evaluated. Changes in the spherical equivalent (SE) refractive error and axial length were compared before and after OK use. Changes in the SE and axial length were also compared between two groups according to the myopic progression before baseline: Group 1 with myopic progression < 1 D/year and Group 2 with myopic progression > 1 D/year. RESULTS: The myopic progression rate decreased from −1.1 to −0.3 D/year after OK treatment (p < 0.001). Greater increases in axial length were observed in patients who were younger and had less myopia at baseline, a higher rate of myopia progression before baseline, and a shorter axial length at baseline (p < 0.001, p < 0.004, p < 0.007, and p < 0.001, respectively). The increase in axial length was significantly greater in the group with greater myopic progression before baseline (0.2 mm/year) than in the group with less myopic progression (0.1 mm/year) (p = 0.001). CONCLUSIONS: Myopic progression was reduced significantly after OK treatment.
Key Words: Myopia;Orthokeratology;Progression


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