Effect of Lens Deviation on Peripheral Defocus and Optic Quality in Adolescents With Moderate and Severe Myopia.

IF 2 4区医学 Q2 OPHTHALMOLOGY Eye & Contact Lens-Science and Clinical Practice Pub Date : 2024-09-01 Epub Date: 2024-08-08 DOI:10.1097/ICL.0000000000001104

Jia Yu, Yuehua Zhou

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Abstract

Objectives: The aim of this study was to analyze the effects of lens deviation on peripheral defocus and optic quality in adolescents with moderate and severe myopia.

Methods: This prospective study enrolled 81 children (81 eyes). The spherical equivalent was -5.0≤SE≤-6.0 diopter. The participants were divided into two subgroups based on their eccentricity (inferior temporal) after wearing the lenses for 12 months. Between them, the low eccentric subgroup (A) had a total eccentric distance of less than 0.5 mm, and the moderate and severe eccentric subgroup (B) had a total eccentric distance of ≥0.5 mm. Peripheral defocus and eccentricity were measured before and after wearing the lenses, and the Spearman test was used to compare the parameters.

Results: Parameters such as the total peripheral defocus (TRDV) were significantly lower in subgroup B than in subgroup A after 12 months of orthokeratology lens usage. The axial length growth (ΔAL) in subgroup A was higher than that in subgroup B. Axial length growth, TRDV, and other parameters were significantly associated with eccentricity. The modulation transfer function cutoff and Strehl ratio were also significantly associated with eccentricity.

Conclusions: Greater eccentricity within a certain range can induce greater periretinal defocus and improve the ΔAL.

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镜片偏差对中度和重度近视青少年周边散焦和光学质量的影响。

研究目的本研究旨在分析晶状体偏差对中度和重度近视青少年周边散焦和光学质量的影响：这项前瞻性研究共招募了 81 名儿童（81 只眼）。球面等效度数为-5.0≤SE≤-6.0屈光度。戴镜 12 个月后，根据偏心率（颞下）将参与者分为两个亚组。其中，低偏心亚组（A）的总偏心距小于 0.5 毫米，中度和重度偏心亚组（B）的总偏心距≥0.5 毫米。在配戴镜片前后测量了周边散焦和偏心率，并用斯皮尔曼检验比较了这些参数：结果：配戴角膜塑形镜 12 个月后，B 组的总周边离焦（TRDV）等参数明显低于 A 组。A亚组的轴长增长（ΔAL）高于B亚组。轴长增长、TRDV和其他参数与偏心率显著相关。调制传递函数截止值和 Strehl 比值也与偏心率显著相关：结论：在一定范围内偏心率越大，视网膜周围离焦越大，ΔAL 越好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Eye & Contact Lens-Science and Clinical Practice OPHTHALMOLOGY-

CiteScore

4.50

自引率

4.30%

发文量

150

审稿时长

6-12 weeks

期刊介绍： Eye & Contact Lens: Science and Clinical Practice is the official journal of the Contact Lens Association of Ophthalmologists (CLAO), an international educational association for anterior segment research and clinical practice of interest to ophthalmologists, optometrists, and other vision care providers and researchers. Focusing especially on contact lenses, it also covers dry eye disease, MGD, infections, toxicity of drops and contact lens care solutions, topography, cornea surgery and post-operative care, optics, refractive surgery and corneal stability (eg, UV cross-linking). Peer-reviewed and published six times annually, it is a highly respected scientific journal in its field.