The Effect of Corneal Refractive Power Area Changes on Myopia Progression during Orthokeratology

Autor: Minfeng Chen, Xinting Liu, Zhu Xie, Pengqi Wang, Miaoran Zheng, Xinjie Mao
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Journal of Ophthalmology, Vol 2022 (2022)
Druh dokumentu: article
ISSN: 2090-0058
DOI: 10.1155/2022/5530162
Popis: Purpose. To investigate the effect of corneal refractive power area changes on myopia progression during orthokeratology. Methods. One hundred and sixteen children who met the inclusion criteria and insisted on wearing orthokeratology lenses for two years were retrospectively assessed. Seventy-two children with the orthokeratology lens decentration distance more than 0.5 mm but less than 1.5 mm were in the decentered group, and forty-four children with the orthokeratology lens decentration distance less than 0.5 mm were in the centric group. The orthokeratology decentration via tangential difference topography was analyzed. This study calculated the different power areas in the central 4 mm pupillary area by axial-difference corneal topography, compared the differences of the different power areas between these two groups, and evaluated the relationships between corneal positive-power area, orthokeratology decentration, and AL changes. Results. The axial length changes of the centric group presented a statistical difference with the decentered group (0.52 ± 0.37 mm vs. 0.38 ± 0.26 mm; t = 2.403, p=0.018). For all children, both the AL changes (0.43 ± 0.31 mm) and decentration distance (0.64 ± 0.33 mm) showed a significant correlation with the positive-power area (r = −0.366, p
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