I had exactly the opposite experience: I always was a little bit short-sighted but never wore glasses / contact lenses. A few years ago I decided to use contact

I had exactly the opposite experience: I always was a little bit short-sighted but never wore glasses / contact lenses. A few years ago I decided to use contact lenses and suddenly my short sightedness quickly got worse and I need much higher Dioptre lenses than when I started using them.