I started uni in October of 2008. I would spend entire days cooped up in my teeny tiny little bedroom, pushing myself to read through my textbook and pages and pages of legal cases. One of the wonders of the 21st century means that much of the case-reading could be done via the internet. I therefore spent a large percentage of my day staring at a computer screen.
I started to notice that I was finding it difficult to read slides during lectures, and that it was giving me a headache to concentrate on what was being written. This is how, in December of 2008, I discovered that I had managed to make myself short sighted.