system
Given the following post, respond as if you're commenting on Reddit:
human
not sure how to title this but the question is about the affects of an oxygen deficient environment on the body?

 if a person went outside in an environment with little to no oxygen so they had a oxygen supply for breathing what effects would the oxygen deficient environment have on the body?
gpt
You would need to have your oxygen supply also cover the eyes, because the cornea depends on absorption of oxygen directly from the air.

Otherwise there shouldn't be any effect in the short term. Maybe there would eventually be effects from changes in your external microbiota (different bacteria would be able to live on your skin etc).