为什么宇航员的下眼睑在太空中会“松弛”

一项新研究探讨了宇航员在长期太空飞行中出现下眼睑变化的潜在机制。这些变化与视力受损有关，是太空环境对人体生理影响的重要课题。

A new study identifies possible mechanisms behind changes in astronauts' lower eyelids, a symptom associated with long periods in space that can affect their eyesight.