在高近视患者的femto-LASIK废除后,视觉结果不理想
Rudy M M A Nuijts1, Robin Ollivier, Bruce D Allan
1The Netherlands.
Journal of cataract and refractive surgery
|March 25, 2024
概括
在 Femto-laser 辅助 in situ 角质化 (LASIK) 后,视力不理想的结果可能源于诱导的光和折射误差. 进一步的研究和潜在的再治疗是改善LASIK手术后视力的关键.
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:
- 一名28岁的患者接受了为近视而进行的女性秒激光辅助 in situ 角膜切除术 (LASIK).
- 术前评估,包括Scheimpflug成像和心力测量,没有发现任何异常.
- 患者在手术过程中感到紧张.
研究的目的:
- 为了调查LASIK手术后视力敏度低于最佳的原因.
- 确定治疗策略,以改善视觉结果在这个特定的情况下.
主要方法:
- 分析手术前和手术后视力敏度,明显折射和角质尺度形.
- 使用Scheimpflug成像用于角膜拓和心法测量.
- 波面分析和周期性折射来评估更高阶的偏差和折射误差.
主要成果:
- 在LASIK后,该患者右眼的未经校正的远视敏度 (UDVA) 为20/30和纠正的远视敏度 (CDVA) 为20/20,左眼的UDVA为20/20,CDVA为20/16.
- 手术后明显的折射显示诱导的高视度形 (+0.25 -1.25 × 030 OD, +0.25 -0.00 × 0 OS).
- 角膜拓显示诱导的形 (1.2 D × 114 OD,0.4 D × 78 OS) 和显著的稀释 (505 μm OD,464 μm OS). 波面分析和周期性折射表明残余折射误差和纹.
结论:
- 不理想的视觉结果很可能是由于LASIK后诱导的不规则的白和残留折射误差.
- 一种潜在的治疗策略可能涉及波面导向光反射角膜切除术 (PRK) 或LASIK增强,以纠正残留折射误差和纹.
相关概念视频
01:16Focusing of Light in the Eye
2.7K
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...
2.7K
01:28Angle Closure Glaucoma: Treatment
485
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...
485