Andrew Huberman had a tendency for one eye to deviate inward, increasing with fatigue and causing double vision.

“I have yet another experience that I think illustrates the key importance of both critical period plasticity and the questions about whether or not to rely on corrective lenses and that is uh from the time I was pretty young I could make my sister laugh by deviating one eye inward so not crossing my eyes but moving one eye Inward and then what happened was when I was in college and studying a lot a lot and getting very fatigued I noticed that this I started just kind of drift in a little bit so I went to the campus Health Center and they gave me a prescription for a prism lens which of course redirects the image but then I noticed that this eyeball moving Inward”