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- W2372904504 abstract "Objective:To assess early changes in response to ovenight wear of orthokeratology.Methods:Two kinds of orthokeratology lenses with different Dk value were fitted to 25 eyes of 14 patients(average refraction:-3.89±1.26D).The patients were randomly divided into two groups by the lenses Dk values: One group with BE orthokeratology lenses(7 patients, 12 eyes, Dk≈140);The other group with EE orthokeratology lenses(7 patients, 13 eyes,Dk=58),All eyes were free o f pathology. All patients wear lenses ovenight. The average wear time was 10.76±1.27 hours. Changes in the radius and thickness of the cornea were measured with Orbscan corneal topography system after 1 night of lens wear. And unaided acuity and refractive changes were recorded.Results:Significant increases were observed both in central and peripheral cornea thickness(P0.01).Simulated keratometry (Simk) reading indicated significant flattening in both the horizontal(△Simk:0.94±0.56D,P0.001)and vertical meridians(△Simk:0.996±0.68D,P0.001).The unaided acuity increased significantly by 0.4±0.24. Refraction significant decreases-1.85±0.82D. The difference in the increases of cornea thickness on central and superotemporal corneal locations between 2 groups has statistically significance.Conclusion:This study showed that orthokeratology is effective on reducing the refraction of myopia after overnight wear. And the cornea thickness increases slightly after 1 night wear. [FK(WB80011。5]" @default.
- W2372904504 created "2016-06-24" @default.
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- W2372904504 date "2000-01-01" @default.
- W2372904504 modified "2023-09-24" @default.
- W2372904504 title "Changes in corneal radius and thickness in response to overnight wear of orthokeratology lenses" @default.
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