相关实验视频

Updated: Sep 17, 2025

Quantification of Oculomotor Responses and Accommodation Through Instrumentation and Analysis Toolboxes

Quantification of Oculomotor Responses and Accommodation Through Instrumentation and Analysis Toolboxes

Published on: March 3, 2023

[基于MRI的双眼收期间间歇性外的患者眼外肌肉变化的初步观察]

L Xia¹, L X Feng¹

¹Department of Ophthalmology, First Affiliated Hospital of Anhui Medical University, Hefei 230001, China.

[Zhonghua yan ke za zhi] Chinese journal of ophthalmology

|July 3, 2025

概括

与健康个体相比,间歇性外热症 (IXT) 患者在收期间的中直肠扩散权重成像 (DWI) 变化减少. 这项MRI研究突出显示了IXT中眼外肌肉功能的改变.

科学领域:

眼科医生眼科眼科
医疗成像医学成像
神经科学是一个神经科学.

背景情况:

间歇性外向性 (IXT) 是一种常见的偏视症,影响双眼视力.
了解IXT中眼外肌肉变化的潜在病理生理学对于有效的管理至关重要.
扩散权重成像 (DWI) 提供了一种非侵入性方法来评估组织微观结构和功能.

研究的目的:

用MRI检查间歇性外otropia (IXT) 的患者在双眼收期间外眼肌肉的扩散权重成像 (DWI) 的变化.
在IXT中探索眼外肌肉变化的特定成像特征.
为了将DWI变化与IXT患者的偏程度相关联.

主要方法:

一项横截面研究,比较了接受IXT的患者和年龄/性别匹配的健康对照.
进行了轴性MRI扫描,以测量DWI信号强度值在初级凝视和收凝视期间的中间直肠,侧直肠和视神经.
群体和凝视条件之间比较了正常化的DWI值;使用相关性分析来评估DWI变化和视严重程度之间的关系.

主要成果:

与健康对照组相比,IXT患者在双眼收期间,在中间直肠的正常化DWI值中显著减少了变化.
在健康对照组中,中间直肠DWI值在趋同期间显著增加 (P<0.05).
在IXT组中,在趋同期间没有观察到中间直肠DWI值的显著变化 (P>0.05),DWI变化与偏程度之间的负相关性趋势 (r=-0.58,P=0.059).

结论:

患有IXT的患者在双眼收期间表现出中间直肠肌肉的适应性变化受损,由减少DWI信号变化证明.
DWI MRI 可以揭示与IXT相关的眼外肌肉的功能差异.
这些发现表明改变了肌肉生理学,有助于间歇性外热症的表现.

更多相关视频

Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform

Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform

Published on: May 23, 2013

Ocular Kinematics Measured by In Vitro Stimulation of the Cranial Nerves in the Turtle

Ocular Kinematics Measured by In Vitro Stimulation of the Cranial Nerves in the Turtle

Published on: June 2, 2018

相关概念视频

Muscles of the Eye

Muscles of the Eye

The muscles of the eye are sophisticated structures that control eye movement and focus, allowing for the precise and rapid adjustments necessary for vision. The human eye is controlled by ten muscles — six extraocular muscles, three intraocular muscles, and one primary eyelid retractor muscle.
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and...

Accessory Structures of the Eye

Accessory Structures of the Eye

Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...