NASA astronaut Jessica Meir wears a set of virtual reality goggles for a vision test

iss075e0000108 (July 29, 2026) --- NASA astronaut and Expedition 75 commander Jessica Meir wears a set of virtual reality goggles, also called the Nevada Screening Vision System, for a test that measures visual function using a series of vision screening apps testing visual acuity, contrast sensitivity, and more.