I have pronounced astigmatism--
ASS-TIG-MA-TIZZUM
And now, so have I.
(Seriously, though, I need glasses, but only for focal reasons.)
Visually, I have no idea if what I see is what you are seeing. Visual artefacts are, so far as I can tell, an inbuilt result of the processing.
Stare at the sky and the rest of the vista on a particarly grey day, when you expect rain and you (or at least I) see fine drizzle. When it does drizzle, I need to check the foreground (is it wet?) to make sure. It might be a function of low (it doesn't happen on a bright day) save that I also consider myself to have rather good night-vision - if I can keep artificial light from blinding me during my nocturnal sojourns. Other than infrequent and random scintilations, that I understand to be perfectly normal and easily ignored, a trek through the woods near my house needs only a half- or quarter-moon filtering down to make it clear enough to walk a path as per day.
Those that aren't physical issues (my mother had cateracts, and when the optician reopens I'm overdue to check I'm still
only extremely myopic, myself). I'm sure with a full mindswap, it'd be interesting to compare the sensory differences ("That old pain? I've had it so long I had no idea it's actually now intolerable to someone else...") but, aside from the philosophical discussion of how far from core to peripheral nerve system this switcheroo takes place over (thus potentially importing/exiling the very differences the displaced mind is expected to cross-compare), it's not actually possible right now
[Citation needed].