相关实验视频

Updated: Jul 8, 2025

Using Retinal Imaging to Study Dementia

Using Retinal Imaging to Study Dementia

Published on: November 6, 2017

对比灵敏度与质细胞/内状层厚度以及不同严重程度的绿眼病中损伤位置的相关性

Ruiqi Pang¹, Jieting Peng^1,2, Qing Zhang¹

¹Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China.

Eye (London, England)

|December 15, 2023

概括

在开角青光眼 (OAG) 中对比度敏感性损伤与所有黄斑部门的质细胞/内状层 (GC/IPL) 稀薄相关. 这种关系在已确定的青光眼阶段是显著的,支持对比度灵敏度作为关键指标.

科学领域:

眼科医生眼科眼科
神经科学是一个神经科学.
医疗成像医学成像

背景情况:

开角玻璃眼 (OAG) 是一种渐进的视神经病变,其特征是视网膜质细胞损失.
对比度敏感性是重要的视觉功能,在绿眼病患者中经常受到损害.
黄斑区域的质细胞/内状层 (GC/IPL) 厚度是青光眼损伤的关键指标.

研究的目的:

调查OAG的斑点GC/IPL厚度和对比度灵敏度之间的相关性.
为了确定这种相关性如何随着青光眼的严重程度和斑点内损伤的位置而变化.

主要方法:

一项涉及106名患有OAG的患者 (203只眼睛) 的横截面研究.
用快速对比感应功能的测试来评估对比感应度.
斑点GC/IPL厚度通过光学连贯性断层扫描进行测量,分析了6个区域的损伤定位.

主要成果:

在所有黄斑部门的平均GC/IPL厚度和对比度灵敏度参数之间发现了显著的相关性 (p < 0.01).
结构-功能相关性在鼻相比较强,与相比较强,与下等区域相比较强.
在早期,中度和晚期的青光眼中,相关性显著,但在前周边性青光眼中没有.

结论:

所有黄斑部门的GC/IPL稀释与OAG的对比度敏感性受损有关.
下部时间部门的结构影响最小.
对比度灵敏度作为一个可靠的指标来评估早期,中度和晚期OAG的严重程度.

更多相关视频

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential

Published on: May 25, 2020

Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents

Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents

Published on: February 15, 2022

相关概念视频

Glaucoma: Overview

Glaucoma: Overview

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...

Anatomy of the Eyeball

Anatomy of the Eyeball

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...