I've been reading the comments and something stuck out to me. It's not uncommon for people to have 20/15 vision with corrective lenses. The lenses don't zoom th

I've been reading the comments and something stuck out to me. It's not uncommon for people to have 20/15 vision with corrective lenses. The lenses don't zoom the image in, as far as I can tell; and so, the 20/20 number we often come up with has nothing to do with the resolution of the eye as a sensor, but more to do with the focusing power of the lens. It might be more useful to consider 20/15 or 20/10 as what humans can see, since the lens is whats failing on the eye, not the sensor in the back. To that end, too, it'd be nice to see some really good glass to mitigate the lenses failings there. There are charts that relate lens sharpness to sensor acuity. As long as the lens sharpness is approximately equal or better, we should have an accurate result. Also, I have 20/15 vision with contacts in and both eyes open (weaker with just one eye open, as is normal); and, when I can see letters, I can see them pretty well defined. I'm not sure how much of that is mental post-processing, though.