Background/aims Defocus incorporated multiple segments (DIMS) spectacle lenses are known to be able to inhibit axial length (AL) growth in myopic children compared with single vision (SV) spectacle lenses. However, it is not known whether AL growth is sufficiently inhibited to achieve the treatment goal of physiological AL growth. Methods Of the data already collected in 2014–2017 by Lam et al , the AL growth with DIMS and SV spectacle lenses was re-evaluated according to the age-matched myopia control system. The individual AL growth after the first year of treatment of each eye was plotted against the corresponding age of the same time point in a colour-coded scheme. The two treatment groups were further subdivided based on their age and their baseline AL. Results Overall, 65% (61% of male, 70% of female) of eyes with DIMS spectacle lenses and 16% (16% of male, 16% of female) of eyes with SV spectacle lenses are within range of physiological AL growth rate. Median AL growth rate of eyes with DIMS spectacle lenses is also within the range of physiological growth. In the subgroups, eyes with DIMS spectacle lenses were also superior to the ones with SV spectacle lenses regarding this treatment goal. Of the children with SV spectacle lenses, older children and children with eyes with high baseline AL were least likely to achieve physiological AL growth rate. Conclusions DIMS spectacle lenses can bring the AL growth rate of myopic children to the level of physiological AL growth rate, indicating 100% reduction of excessive myopic AL growth, independent of age and baseline AL. Older children and children with eyes with high AL have the risk to have increased AL growth without treatment. Data are available on reasonable request.

中文翻译：

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近视儿童佩戴散焦多段眼镜片眼轴增长的年龄匹配分析


背景/目标 与单光 (SV) 眼镜片相比，散焦多段 (DIMS) 眼镜片已知能够抑制近视儿童的眼轴 (AL) 增长。然而，尚不清楚 AL 生长是否被充分抑制以实现生理性 AL 生长的治疗目标。方法根据Lam等人2014-2017年收集的数据，根据年龄匹配近视控制系统重新评估DIMS和SV眼镜片的AL生长情况。将每只眼睛治疗第一年后的个体 AL 生长情况与同一时间点的相应年龄以颜色编码方案进行绘制。两个治疗组根据年龄和基线 AL 进一步细分。结果 总体而言，佩戴 DIMS 眼镜镜片的眼睛中有 65%（男性 61%，女性 70%）和佩戴 SV 眼镜镜片的眼睛有 16%（男性 16%，女性 16%）处于生理性 AL 增长率范围内。佩戴DIMS眼镜镜片的眼睛的中位AL生长率也在生理生长范围内。在亚组中，就这一治疗目标而言，佩戴 DIMS 眼镜镜片的眼睛也优于佩戴 SV 眼镜镜片的眼睛。在佩戴 SV 眼镜镜片的儿童中，年龄较大的儿童和眼睛基线 AL 较高的儿童最不可能达到生理性 AL 增长率。结论 DIMS 眼镜片可以使近视儿童的 AL 增长率达到生理性 AL 增长率水平，表明 100% 减少过度近视 AL 增长，与年龄和基线 AL 无关。年龄较大的儿童和患有高 AL 眼睛的儿童在不接受治疗的情况下，有可能增加 AL 的生长。可根据合理要求提供数据。