相关实验视频
Updated: Mar 6, 2026

09:17
Using Retinal Imaging to Study Dementia
Published on: November 6, 2017
22.4K
阿尔茨海默病中的功能和结构性视网膜变化:从光阴性反应 (PhNR) 和基于OCT的分析的见解
Hidayet Sener1, Furkan Ozer2, Osman Ahmet Polat3
1Department of Ophthalmology, Erciyes University Medical Faculty, Kayseri, Turkey.
Documenta ophthalmologica. Advances in ophthalmology
|March 4, 2026
概括
阿尔茨海默病 (AD) 与视网膜功能减弱有关,观察到较低的电网膜学 (ERG) 幅度. 光学连贯断层扫描 (OCT) 揭示了AD患者的特定视网膜层稀释,b波幅显示出最强的诊断潜力.
科学领域:
- 眼科医生 眼科 眼科
- 神经学 神经学
- 医疗成像医学成像
背景情况:
- 阿尔茨海默病 (AD) 是一种影响认知功能的神经退行性疾病.
- 视网膜结构和功能可能会在阿尔茨海默病中受到影响,提供潜在的生物标志物.
- 评估视网膜变化可以提供有关AD病理生理学的见解.
研究的目的:
- 评估阿尔茨海默病 (AD) 患者的视网膜结构和功能.
- 为了比较阿兹海默症患者和健康对照人群之间的视网膜参数.
- 确定电网膜学 (ERG) 和光学连贯性断层扫描 (OCT) 在AD的诊断实用性.
主要方法:
- 使用全场电网红学 (ERG) 来测量a波,b波和光学负响应 (PhNR) 幅度.
- 光学连贯断层扫描 (OCT) 用于测量视网膜神经纤维层 (RNFL) 厚度和内核层 (INL) 和外状层 (OPL) 厚度.
- 分析了61名参与者的90只眼睛 (30名AD患者,31名对照).
主要成果:
- 与对照组相比,阿尔茨海默氏病 (AD) 患者对a波,b波和PhNR的幅度明显较低.
- 在AD患者的中央内核层 (INL),下部外形层 (OPL) 和时间OPL中观察到较小的厚度.
- 乙波振幅显示了0.956的曲线 (AUC) 下的最高区域,用于区分AD患者与对照组.
结论:
- 阿尔茨海默病 (AD) 与全场ERG振幅的普遍减少有关.
- 在AD患者中通过OCT检测到特定视网膜层 (INL,OPL) 的选择性稀薄.
- 来自ERG的B波幅度是一种高效的电生理学测量,用于区分AD患者与对照组.
关键词:
阿尔茨海默氏症是阿尔茨海默氏症的一种疾病.电网光学图 (Electroretinography) 是一种电网光学图.光学连贯性断层扫描技术.摄影的负面反应反应.视网膜质细胞 视网膜质细胞视网膜神经纤维层是一种神经纤维层.更多相关视频
10:14Author Spotlight: Ex Vivo OCT-Based Multimodal Imaging of Human Donor Eyes for Research into Age-Related Macular Degeneration
Published on: May 26, 2023
4.3K
12:48In Vivo Dynamics of Retinal Microglial Activation During Neurodegeneration: Confocal Ophthalmoscopic Imaging and Cell Morphometry in Mouse Glaucoma
Published on: May 11, 2015
11.2K
相关概念视频
Photoreceptors and Visual Pathways
10.4K
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,...
10.4K
Anatomy of the Eyeball
11.0K
The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
11.0K