在幼儿中对外围光学质量的纵向测量
Fuensanta A Vera-Diaz1, Deepa Dhungel1, Aidan McCullough1
1New England College of Optometry, Boston, Massachusetts, USA.
概括
患近视高风险的儿童在近视发作之前就会表现出明显的外围光学质量差异,包括更高层次的偏差和更负面的失焦,甚至在近视发作之前. 这些早期的光学信号可能会影响凝视和近视的发展.
科学领域:
- 眼科医生 眼科 眼科
- 视光学测量 视光学测量 视光学测量
- 儿科眼科护理 儿科眼科护理
背景情况:
- 近视的发展是儿童群体日益关注的问题.
- 了解早期的光学差异对于近视预防策略至关重要.
- 追踪儿童视觉发育的纵向研究是必不可少的.
研究的目的:
- 研究高风险 (HR) 和低风险 (LR) 近视儿童的外围光学质量的纵向变化.
- 为了分析在三年内发展近视的幼儿的光学偏差.
- 确定近视发展的潜在早期生物标志物.
主要方法:
- 每六个月测量出92名使用Zernike多项式对4毫米瞳孔的emmetropic儿童的异常.
- 根据折射误差和父母病史将儿童分为HR或LR组.
- 计算指标包括高阶斯特雷尔比率 (HO-SR),球形偏差 (SA),昏迷和失焦.
主要成果:
- 在HR的孩子和那些发展近视的孩子,与LR的孩子相比,表现出更高的HO-SR.
- 在HR和近视儿童中观察到较少的积极SA和较多的负面失焦,跨越异常.
- 随着时间的推移,外围失焦变得更为负面,在时间视网膜上的HR儿童中.
结论:
- 在近视发作之前,HR儿童的中央和近外视网膜中存在HO-SR,SA和失焦的显著差异.
- 这些外围光学差异可能在缩信号中起作用.
- 观察到的纵向变化表明这些光学变化可能是近视发展的原因.
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