角膜的生物机械性质和近视眼中的眼偏差
Rebika Dhiman1, Divya Singh, Murugesan Vanathi
1Dr. R. P. Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.
Indian journal of ophthalmology
|December 15, 2023
概括
较高的近视与较长的轴长和眼睛偏差增加相关. 角质生物力学在高近视患者中较弱,但在femto-LASIK候选人之间没有显著差异.
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
- 生物医学工程 生物医学工程
背景情况:
- 近视是一种常见的折射误差,与眼睛偏差和角膜特性变化有关.
- 了解这些关系对于折射手术规划和患者的结果至关重要.
研究的目的:
- 为了研究角膜地形,生物力学特性和近视眼中的眼睛偏差之间的相关性.
- 评估这些因素如何与折射误差的大小有关.
主要方法:
- 招募了接受折射手术的近视患者.
- 收集了视力敏度,轴长 (AL),中角膜厚度 (CCT),明显折射球形等效 (MRSE),角膜地形,生物力学因素 (眼响应分析仪 - ORA) 和光学偏差 (iTrace) 的数据.
- 根据患者适合接受femto-LASIK的情况将患者分为不同组.
主要成果:
- 折射误差与AL负相关,总异常和低阶异常 (LOA).
- 在CCT,角膜歇斯底里症 (CH),角膜抵抗因子 (CRF) 和眼内压力 (IOP) 测量之间发现了强烈的正相关性.
- 高级偏差 (HOA) 和LOA随着度较高 (sim-K) 和CRF较高而增加,特别是在不适合的组中.
- 在两个femto-LASIK适合性组之间,折射误差,AL,CCT和sim-K的显著差异.
结论:
- 缩视的严重程度增加与更大的AL和较高的总和下级异常有关.
- 角膜的生物力学参数 (CCT,CH,CRF) 是高度相互关联的.
- 高近视显示出较弱和较薄的角膜,表明角膜生物力学较差.
- 角膜生物力学和眼睛异常在适合和不适合femto-LASIK组之间没有显著差异.
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