Ironic as it is, I have what most people would describe as pretty bad eyesight. Over the course of one semester at Uni, I noticed that I (fairly suddenly, to me, at least) I could no longer read the slides on the projector for any of my lectures. Sitting closer to the front didn’t help much either - the problem wasn’t that it was too blurry, but that the words were all overlapping each other. I would later learn that I have a condition known as Keratoconus - in essence, a misshapen cornea.