在小切割镜片提取后出现的角膜上级异常,用于高近视直视的纠正
1Department of Ophthalmology, General Hospital of Central Theater Command, Wuhan 430070, Hubei Province, China.
International journal of ophthalmology
|July 21, 2025
概括
小切口镜片提取 (SMILE) 手术导致更多的高阶异常 (HOA) 和轻微的低校正在高纹症患者. 微笑后HOA的增加与手术前的白症水平有关.
科学领域:
- 眼科医生 眼科 眼科
- 折射手术是一种折射手术.
- 角膜异常 角膜异常
背景情况:
- 小切口镜片提取 (SMILE) 是一种流行的折射手术程序.
- 了解它对视觉结果和角膜异常的影响对于患者的选择和管理至关重要.
- 高近视性眼症在折射纠正方面提出了独特的挑战.
研究的目的:
- 为了比较视觉结果和角膜高阶异常 (HOAs) 后微笑在高与低近视眼症的患者.
- 评估手术前的纹和手术诱导的HOA之间的关系.
主要方法:
- 对157只接受SMILE的眼睛进行了回顾性比较研究.
- 眼睛分为高形眼睛群 (HAG;形眼睛 ≤-2.00 D) 和低形眼睛群 (LAG;形眼睛 ≥-1.00 D).
- 评估了手术前和手术后6个月的视觉,折射和角膜HOA (前,后,总).
主要成果:
- 两组都获得了优异的未经校正的距离视敏度 (≥20/20在97-100%).
- 高度白症组显示了更大的折射误差 (-0.37±0.31 D对比 -0.04±0.19 D) 和更低的成功指数 (0.22±0.09对比0.50±0.46).
- 在这两组中,SMILE显著增加了HOA (特别是球形异常和昏迷),HAG中水平昏迷和总HOA的增加更为明显,主要来自前角膜.
结论:
- 微笑手术诱导了更多的高阶异常 (HOA) 和轻微的低校正在高眼的眼睛.
- 微笑后HOA的增加与手术前的白症水平相关.
- 这些发现表明,由于HOA诱导增加,SMILE应在患有高近视性眼症的患者中仔细考虑.
相关概念视频
01:16Focusing of Light in the Eye
3.2K
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
3.2K
01:28Angle Closure Glaucoma: Treatment
691
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
691
01:27Open Angle Glaucoma: Treatment
577
In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
Drugs such as carbonic anhydrase inhibitors, α2- and...
577