See, without my glasses or contacts I cannot see for beans. Certainly some of you are blinder than I am--and I don't even just mean the blind guy--but I am still on the "wow you really cannot see" end of things, not the "oh well I read more comfortably with them" end of things when it comes to wearing my glasses/contacts.
For the first few seconds it's in, the gel has a lensing effect on my vision. And my brain can distinguish between my proper not-seeing-right and this other version of not-seeing right. This fascinates me. I would have predicted that this would only come up with things like shape distortions or color distortions or like that. I would have predicted that "in focus" is what my brain is processing. But no, the right out of focus is very different from the wrong out of focus.
Brains. I tell ya. Weird, weird stuff.