, but new technology like virtual reality and artificial intelligence could help test astronauts' eyesight while in space and come up with solutions to the problem.
"We want to further understand why SANS occurs, because right now, even though it's one of the largest physiological barriers to spaceflight, we actually don't know the ," Ong told CTVNews.ca in an interview.Published in the Nature Partner Journal of Microgravity on June 27, the study explains that an astronaut's eyes will adjust in space, but after a long period of time, changes to their vision could be irreversible.
Some common issues are optic nerve swells, eye flattening, which distort vision, cotton wool spots, which are dots that impair vision, and choroidal folds, which reduce vision. One such technology is a pair of VR goggles they came up with that conduct eye tests in a compact way.