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用5毫米与6.5毫米的近视光学区域进行小切口折射镜片提取的比较研究
Jeevan S Ladi1, Anita Gaikwad1, Nitant A Shah1
1Department of Ophthalmology, Dada Laser Eye Institute, Pune, Maharashtra, India.
Indian journal of ophthalmology
|July 7, 2023
概括
小切割折射晶体提取 (SMILE) 具有5毫米晶体直径保留较大的残留层厚度 (RST) 与6.5毫米直径相比. 这种技术提高了安全性,而不会增加更高阶偏差.
科学领域:
- 眼科医生 眼科 眼科
- 折射手术是一种折射手术.
- 角膜外科手术 角膜外科手术
背景情况:
- 小切口折射镜片提取 (SMILE) 是一种流行的折射手术程序.
- 优化手术参数对于患者安全和视觉结果至关重要.
- 剩余肌层厚度 (RST) 是在手术后保持角膜生物力学完整性的关键因素.
研究的目的:
- 为了比较接受SMILE的眼睛的剩余肌层厚度 (RST) 具有6.5毫米的镜片直径与5毫米的镜片直径.
- 评估不同镜片直径对视敏度,对比度灵敏度和高阶偏差的影响.
主要方法:
- 一个回顾性比较病例系列包括在2016年至2021年间接受SMILE治疗的患者,随访至少6个月.
- 记录了手术前的数据,包括视敏度,折射误差和角膜地形.
- 根据镜片直径,患者被分为两组:6.5毫米 (n=372) 和5毫米 (n=318).
- 在手术后1个月和6个月进行了RST,术后折射,异常和主观视觉质量的比较.
主要成果:
- 与6.5毫米组相比,用5毫米镜片直径治疗的眼睛显示RST (30.6微米) 显著增加,即使在调整了手术前因素 (P < 0.001) 之后.
- 在手术后视力,对比度敏感性或诱导高阶偏差方面,两组之间没有发现显著差异.
- 平均手术前球形等价值为 -4.48 D ± 2.16 D,平均可视瞳孔大小为 3.7 ± 0.75 mm.
结论:
- 在SMILE手术中使用5毫米的镜片直径会导致近视范围内的残留肌层厚度增加.
- 这种方法可以提高角膜的安全性,而不会损害视觉质量或引发显著的更高阶偏差.
- 5毫米的镜片直径代表了一个潜在的更安全的选择,在SMILE后保持角膜完整性.
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