I did very well in elementary school, though by 4th or 5th grade I often asked to be seated near the front because of the “glare” on the black board. I did not realize I could not see until a science class about clouds, and I could not tell that the sky was overcast, not blue. I was also surprised to see that street lights were points, not large haloes.

I’ve heard many similar stories from nearsighted friends.