I still find it amusing that it took me near 20 years to figure out that I needed glasses.
I always thought that people just saw little bit better than me because they could see text a little bit further away and I was always thinking well I don't need glasses because obviously my vision would be blurred if I needed them.
And I always sat in front of the class so no real struggle reading the board or any information.
Only reason, me and my family figured out I needed glasses was, because I had to do an eye test for my driver's license.
I failed it quite hard.
That when I got my glasses they never required me to take the eye test at the DMV, so for all they know I could have just got in fake glasses.