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对宇航员太空飞行相关的生物识别和折射变化的分析

Alexander A Svoronos¹, Cambria S O'Grady², Evan Walker¹

¹From the The Shiley Eye Institute, Department of Ophthalmology (A.S., E.W., N.A., R.W., A.H.), University of California San Diego, La Jolla, California, USA.

American journal of ophthalmology

|April 7, 2025

概括

长时间的太空飞行会导致宇航员出现轻微的超视变化.

科学领域:

眼科医生眼科眼科
太空医学太空医学
人体生理学人体生理学

背景情况:

宇航员在太空飞行期间经历了显著的生理变化.
在宇航员中报告了眼睛的变化,包括折射转移.
了解这些变化对于宇航员健康和未来的太空任务至关重要.

研究的目的:

在长时间太空飞行后调查宇航员的眼部生物识别和折射变化.
分析生物识别参数和折射位移之间的关系.
为了确定太空飞行持续时间对眼睛健康的影响.

主要方法:

对29名宇航员进行前性队列研究.
飞行前和飞行后的折射和眼部生物测量 (轴长,角膜曲率,前腔深度).
使用线性混合模型方法进行统计分析.

主要成果:

观察到 +0.12 D 的轻度平均超视转移.
轴长度 (-0.09毫米) 和前腔深度 (-0.09毫米) 的减少导致了折射转移.
基线折射显著预测了折射变化的方向和大小.

结论:

太空飞行与轴长度和前腔深度的减少有关,导致轻度超视转移.
个体的折射变化有所不同,近视宇航员经历了更大的超视变化.
研究结果表明,基线折射影响着飞行后折射结果.

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