原型分析揭示了对玻璃眼和NAION中的刺激大小III和V的一致视野模式
David Szanto1, Michael Wall2, Luke X Chong3
1Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
Translational vision science & technology
|December 12, 2024
概括
用更大的刺激尺寸V进行视觉现场测试,显示了类似于绿眼和NAION中的尺寸III的模式. 这支持使用V尺寸来监测中度至重度视力丧失.
科学领域:
- 眼科医生 眼科 眼科
- 神经眼科神经眼科
- 视觉电生理学 视觉电生理学
背景情况:
- 前视神经障碍会产生明显的视野 (VF) 原型 (AT).
- 标准的自动化周边测量使用不同的刺激大小,大小V可能会减少先进视力丧失的变化.
研究的目的:
- 为了确定与刺激大小III和大小V的VF测试是否产生类似的AT在玻璃眼和非动脉炎前部缺血光神经病 (NAION) 中.
- 评估大小V的VF在捕捉疾病特异性模式中的实用性.
主要方法:
- 在1969年同一天的VF对 (大小III和大小V) 进行了原型分析 (AA),这些VF对来自玻璃眼和NAION数据集.
- 在分析之前,原始敏感性被审查和年龄标准化.
- 来自单独的刺激的AT被使用共弦相似性进行了比较.
主要成果:
- AA确定了14种适用于眼和NAION的AT.
- 在大小III和大小V的VF之间观察到类似的模式,87%的AT配对显示出高度的共因相似性 (≥0.8).
- 综合的AT有效地保留了来自单个刺激VF的模式.
结论:
- 使用刺激尺寸V的VF测试显示了与尺寸III相比的可量化的模式.
- 尺寸V的VF适用于监测中度至重度青光眼和NAION的VF进展.
- 这一发现支持使用V大小来对不同刺激大小进行一致的监测.
相关概念视频
Glaucoma: Overview
507
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...
507
Anatomy of the Eyeball
6.0K
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...
6.0K
Vision
52.9K
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
52.9K
Photoreceptors and Visual Pathways
5.7K
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,...
5.7K


