Do you wear glasses OP? I do, as does 2yo dd and I wonder if people restrain themselves from being rude about glasses to an adult wearing glasses?
People either say she looks cute, her glasses a nice colour or ask how I knew she needed them.
Personally, I've always worn them and don't see them as a handicap or much of a responsibility, even for a small child. Put them on in the morning, off at bedtime, barely think about them in between. I think starting very young helps, as they don't seem alien or an extra thing to accommodate.
Routine visits to the orthoptist aren't a big deal. It's not like having a condition with an unpredictable outcome. I think there's some benefit in having a familiar, friendly experience of hospitals and health care specialists. I'm pleased our optician is very close by though, we visit a lot to straighten bent frames.
Swimming - as a child I swam without my glasses (and adored the diffused light effects I saw), then with glasses, now I have prescription goggles, they're approximate but brilliant. Dd swims without glasses.
There's no reason not to do any sport, there are sports bands, contacts later if she wants. Otherwise, the steaming up is an irritation but not a big deal.
I did have a moment of regretting that dd isn't 'perfect' and has this tiny burden but really, I'm much happier that she can see and has excellent eye care available. Also, she looks more like me - and now, like me, she looks incomplete without her glasses.