I am short sighted. Not borderline blind mind you, but I do have trouble seeing without my glasses. I am not allowed to drive without them, let´s put it that way. On top of that i have what is called nystagmus. It´s kind of hard to explain (check out the link) but in essence it causes my eyes to move around the place when I am tired, hungry or otherwise low on energy (hangovers were a real pain).
Every now and then I get a student who is also short sighted. Unsurprisingly I get asked how good of an idea it is to go windsurfing with glasses. Usually my answer is divided in one of the following categories.