Trial reportSichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition2025
[Effect of Back Optical Zone Diameter of Orthokeratology Lens on Visual Quality in Myopic Children].
Trial report in Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
4 authors.
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Abstract
Objective: To evaluate the long-term effects of orthokeratology (ortho-k) lenses with different back optical zone diameters (BOZD) on the quality of vision in myopic children. Methods: We conducted an exploratory analysis based on a prospective, randomized, double-blind clinical trial, focusing on the parameters related to visual quality. A total of 66 myopic children aged 8 to 12 years were enrolled and randomly assigned to either a 6-mm BOZD ortho-k lens group (the 6 mm group) or a 5-mm BOZD ortho-k lens group (the 5 mm group). The participants were followed up at baseline, and at 1 day, 1 week, and 1, 3, 6, 9, and 12 months after lens wearing. Visual quality measurements included uncorrected visual acuity (VA), best corrected VA, contrast sensitivity (CS), high-order aberrations (HOA), modulation transfer function (MTF), Strayer ratio (SR), and visual quality questionnaire. Results: A total of 63 children (33 children in the 6 mm group and 30 children in the 5 mm group) completed the study. There were no significant differences in baseline data between the two groups ( Conclusion: In myopic children, wearing ortho-k lenses with different BOZD results in improved subjective satisfaction, with no difference in subjective visual quality. However, objective visual quality declined in both groups, with a greater impact observed in the 5 mm group.
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