减少光盘微血管和视网膜神经纤维层在患有玻璃眼瘤的患者中变薄
Min Hee Suh1, Robert N Weinreb2, Linda M Zangwill2
1From the Department of Ophthalmology (MHS), Haeundae Paik Hospital, Inje University College of Medicine, Busan, South Korea.
American journal of ophthalmology
|May 4, 2024
概括
降低光盘血管密度 (ODVD) 与初级开角玻璃眼 (POAG) 患者的视网膜神经纤维层 (RNFL) 较快变薄有关,这表明微血管变化有助于玻璃眼的进展.
科学领域:
- 眼科医生 眼科 眼科
- 玻璃眼研究研究 玻璃眼研究
- 神经眼科神经眼科
背景情况:
- 主要开角青光眼 (POAG) 是不可逆转失明的主要原因.
- 了解POAG的发病因子对于开发有效的治疗方法至关重要.
- 光盘微血管在视神经头部的健康中起着重要作用.
研究的目的:
- 为了研究光盘血管密度 (ODVD) 和视网膜神经纤维层 (RNFL) 在POAG.患者中变化的变化之间的关系.
- 为了确定ODVD的减少是否与随时间的RNFL损失率有关.
主要方法:
- 分析了105名POAG患者的回顾性病例系列.
- 光学连贯断层扫描 (OCT) 和OCT血管图像是在至少2年内收集的.
- 计算了光盘容器密度 (ODVD),并通过随着时间的推移显著的负斜率确定了ODVD的减少. 使用多变量纵向线性混合效应模型来评估ODVD变化与RNFL稀释之间的关联.
主要成果:
- 在平均2.9年的随访期间,43.8%的患者表现出ODVD减少.
- 较快的全球RNFL稀释与较小的布鲁赫膜开口面积,光盘出血的存在以及全球ODVD变化的更快速度显著相关.
- 全球ODVD变化率是全球RNFL稀释的一个重要预测指标 (ß = -0.090; P = .001).
结论:
- 光盘微血管的减少与POAG中的加速RNFL稀释有关.
- 这些发现凸显了深视神经头部循环在眼病的发病过程中的潜在作用.
- 监测ODVD可以提供对玻璃眼病进展的见解,并为治疗策略提供信息.
相关概念视频
01:25Glaucoma: Overview
560
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
560
01:27Open Angle Glaucoma: Treatment
440
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...
440
01:22Photoreceptors and Visual Pathways
6.0K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
6.0K