在微重力作用下,眼睛刚性和胸膜厚度的变化:一个案例研究
Marissé Masís Solano1,2, Charles Bélanger Nzakimuena2, Rémy Dumas3
1Département d'Ophtalmologie, Université de Montréal, Canada.
American journal of ophthalmology case reports
|October 20, 2023
概括
太空飞行降低了眼睛的刚性,增加了胸膜的厚度,特别是在瓦萨尔瓦演习期间. 这些发现对于了解太空飞行相关的神经眼综合征至关重要.
科学领域:
- 眼科医生 眼科 眼科
- 太空医学 太空医学
- 生物物理学的生物物理.
背景情况:
- 太空飞行对宇航员健康构成风险,包括潜在的眼睛变化.
- 了解微重力中的眼部生物力学对于宇航员安全和任务成功至关重要.
研究的目的:
- 为了评估眼睛刚度和胸膜厚度的变化.
- 为了研究微重力和瓦萨尔瓦机动对私人宇航员眼睛参数的影响.
主要方法:
- 在太空飞行前,期间和之后进行了眼科检查和光学一致性断层扫描 (OCT).
- 胸膜厚度在休息状态和瓦萨尔瓦演习期间进行测量.
- 用一种基于深度学习的冠状腺细分的非侵入性方法来评估眼部刚性.
主要成果:
- 与基线测量相比,太空飞行后眼睛刚度减少.
- 与静止状态相比,Valsalva机动期间的胸膜厚度在太空和地球上都增加了.
- 在瓦尔萨尔瓦演习期间胸膜厚度的增加在太空飞行期间更为明显.
结论:
- 太空飞行诱导眼睛组织中的生物力学变化.
- 观察到的变化,特别是对瓦萨尔瓦机动的增强胆道反应,可能有助于研究与太空飞行相关的神经眼综合征.
- 这些发现对在日益增长的商业太空行业中短期任务的安全性有影响.
相关概念视频
Glaucoma: Overview
599
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...
599
Accessory Structures of the Eye
1.6K
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...
1.6K


