Changes in Stress-Strain Index in School-Aged Children: A 3-Year Longitudinal Study.

IF 1.8 4区医学 Q3 OPHTHALMOLOGY

Journal of Ophthalmology Pub Date : 2023-10-14 eCollection Date: 2023-01-01 DOI:10.1155/2023/6680748

Zhengfei Yang, Bo Wu, Zhouyue Li, Mengting Yu, Jinyun Jiang, Shuyuan Chen, Shengsong Xu, Junwen Zeng, Mengyi Wang, Xiao Yang

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引用次数: 0

Abstract

Purpose: To determine three-year change of the corneal biomechanical parameter stress-strain index (SSI) in schoolchildren aged 7- 9 years and their correlation with refractive error and axial length (AL).

Methods: This is a prospective cohort study. Data of the AL, refractive error, and corneal biomechanical parameter SSI were collected at baseline and a 3-year follow-up for 217 schoolchildren. SSI, AL, and refractive error were measured via corneal visualization Scheimpflug technology (Corvis ST), IOLMaster biometry, and cycloplegic refraction. Three years of changes in SSI and its association with refractive error and AL were analyzed. Participants were divided into persistent nonmyopia (PNM), newly developed myopia (NDM), and persistent myopia (PM). The three-year difference in SSI among the three groups was analyzed.

Results: After three years of follow-up, the corneal biomechanical parameter SSI decreased in all participants (P < 0.01). There was a negative correlation between the change in SSI and the change in AL (r = -0.205, P=0.002) and a positive correlation between the change in refractive error (r = 0.183, P=0.007). After three years of follow-up, there was a decrease in the SSI for the NDM, PM, and PNM participants, with a median change of -0.05 for PNM and -0.13 and -0.09 for the NDM and PM, respectively. There was a significant decrease in corneal biomechanical properties for NDM patients compared with PNM patients (P < 0.01).

Conclusion: In 7- to 9-year-old schoolchildren, SSI decreased after three years of the longitudinal study, and the change in SSI was correlated with the change in AL and refractive error. There was a rapid decrease in corneal biomechanical properties among newly developed myopic patients.

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学龄儿童应力应变指数的变化：一项为期3年的纵向研究。

目的：测定7-9岁学龄儿童角膜生物力学参数应力应变指数（SSI）的三年变化年及其与屈光误差和轴向长度（AL）的相关性。方法：这是一项前瞻性队列研究。在基线和217名学童的3年随访中收集AL、屈光不正和角膜生物力学参数SSI的数据。SSI、AL和屈光不正通过角膜可视化Scheimpflug技术（Corvis ST）、IOLMaster生物测量和睫状肌麻痹屈光度进行测量。分析了三年来SSI的变化及其与屈光不正和AL的关系。参与者被分为持续性非近视（PNM）、新发近视（NDM）和持续性近视（PM）。分析三组SSI的三年差异。结果：随访3年后，所有受试者角膜生物力学参数SSI均下降（P<0.01），SSI的变化与AL的变化呈负相关（r = -0.205，P=0.002）与折射误差的变化之间的正相关性（r = 0.183，P=0.007）。经过三年的随访，NDM、PM和PNM参与者的SSI有所下降，PNM的中位数变化分别为-0.05和-0.13和-0.09。与PNM患者相比，NDM患者的角膜生物力学特性显著降低（P<0.01）。结论：在7-9岁的学童中，经过三年的纵向研究，SSI降低，SSI的变化与AL和屈光不正的变化相关。在新发展的近视患者中，角膜生物力学特性迅速下降。

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

Journal of Ophthalmology MEDICINE, RESEARCH & EXPERIMENTAL-OPHTHALMOLOGY

CiteScore

4.30

自引率

5.30%

发文量

194

审稿时长

6-12 weeks

期刊介绍： Journal of Ophthalmology is a peer-reviewed, Open Access journal that publishes original research articles, review articles, and clinical studies related to the anatomy, physiology and diseases of the eye. Submissions should focus on new diagnostic and surgical techniques, instrument and therapy updates, as well as clinical trials and research findings.