ArticleEye & contact lens2026
The Association of Treatment Zone Decentration With Axial Length Elongation During 2 Years of Orthokeratology Treatment.
Article in Eye & contact lens, 2026. 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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Abstract
objectiveTo investigate the association between treatment zone decentration and axial length elongation in myopic children during 2-year orthokeratology (Ortho-K) treatment.
methodThis retrospective study analyzed clinical data from myopic children who underwent Ortho-K treatment. The magnitudes and direction of Ortho-K treatment zone decentration were recorded along with axial length measurement at baseline and 2-year follow-up. Right eye data were collected for statistical analysis.
resultsSixty subjects were enrolled and divided into three groups according to the distance of treatment zone decentration: 12 eyes in the mild (<0.5 mm), 30 eyes in the moderate (0.5-1.0 mm), and 18 eyes in the severe decentration group (>1.0 mm). Axial length elongation was significantly slower in both severe (0.28 ± 0.21 mm) and moderate decentration group (0.36 ± 0.20 mm) compared with that of the mild decentration group (0.55 ± 0.24 mm) at 2-year follow-up ( P < 0.05). Multivariate regression analysis showed that magnitudes of Ortho-K treatment zone decentration were associated with the axial length elongation ( P = 0.013).
conclusionGreater treatment zone decentration was associated with less axial length elongation. Moderate Ortho-K treatment zone decentration should be optimal choice for safety and efficiency of myopia control in myopic children.
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