If you have 20/20, then you're good. I had baaaaad vision without contacts or glasses. So I was at a 20/100 or worse! You're gonna be fine as long as you don't spend a whole year staring at screens or books all day
Hahaha unfortunately as a software engineer I have no choice but to stare at screens all day for the time being :/ But, I make sure to take 30-40 minute breaks and walk outside to try and focus on things far away... Just need to maintain this 20/20 as long as possible