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- W3029367091 abstract "ObjectiveTo investigate an improved orthokeratology fitting method for myopic adolescents with moderate-to-high astigmatism; to analyze successful fitting factors.MethodsThis was a retrospective analysis of 33 patients (60 eyes) ranging in age from 6 to 18 years with 0.5 to 6.25 diopters (D) of myopia and with-the-rule corneal astigmatism of 1.76 to 3.02 D who were fitted with orthokeratology lenses with a spherical design. Treatment outcomes were evaluated by comparing eyes before lens wear and after wearing the lenses for 1 day, 1 week, 1 month, 3 months, 6 months and 12 months. The results were graded on corneal topography and visual acuity. Orthokeratology central-fitting factors were analyzed in patients with moderate-to-high astigmatism using logistic regression.ResultsThe uncorrected visual acuity (UCVA) of patients before wearing the orthokeratology lenses was 4.15±0.23, and was 4.59±0.23 after 1 night of wear, 4.90±0.11 after 1 week, 4.96±0.07 after 1 month, 4.86±0.25 after 3 months, 4.93±0.10 after 6 months and 4.93±0.11 after 12 months. Visual acuity improved significantly after lens wear (F=148.08, P<0.05) . Four grades were defined as a result of wearing orthokeratology lenses for 1 month. Eyes were graded as follows: grade Ⅰ, 35 eyes (58%) , grade Ⅱ, 15 eyes (25%) , grade Ⅲ, 8 eyes (13%) , grade Ⅳ, 2 eyes (3%) . No statistically significant effect was found on baseline factors in the results. Factors included myopia, corneal astigmatism, steep keratometry (SK) , corneal eccentricities (e) , and inferior-superior value (I-S).ConclusionWith this modified method, spherical orthokeratology lenses can be central-fitted on some myopic patients with moderate-to-high corneal astigmatism.Key words: Orthokeratology; Corneal astigmatism; Influential factors" @default.
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- W3029367091 date "2015-11-25" @default.
- W3029367091 modified "2023-09-26" @default.
- W3029367091 title "Application of improved orthokeratology for myopic adolescents with moderate-to-high astigmatism" @default.
- W3029367091 doi "https://doi.org/10.3760/cma.j.issn.1674-845x.2015.11.012" @default.
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