I've got terrible short-sightedness, roughly the same in each eye. I switched from glasses to contacts about twelve years ago, and it's been great. Very convenient and practical compared to glasses, if you're active and physical. I still wear glasses often enough, but usually just at night or in the morning.

Without correcting lenses, I can barely count my own fingers at arm's length, and can't see details such as eye colour even if I'm standing close to someone.