Well, I was using a reading contact in one eye so I had monovision. It was fine looking at a computer but then for playing sports I'd have to pull the contact out. I had blurry vision playing in the outfield, I couldn't see I thing. I've noticed a huge improvement already in a little over a week. I ride a dirt bike out in the desert and I have a GPS I keep on the bike. I could never see it without wearing my contact, but that compromised my vision for distance. If anybody would ask me I would tell them yeah if you're a candidate, do it. Everything went as clockwork. I called, made an appointment, showed up they looked at me, got me in and out quickly, and I have no complaints.