Last night I went out for a running with my friend. I’m short-sighted, so I have wear a pair of prescription eyeglasses to correct my vision. At first I was quite enjoying my running with my friend. However just several minutes later, my prescription eyeglasses dropped onto the ground, and then I was knocked over. Then I had to go back to my dorm. Since then I decide to buy myself the contact lenses, I think it’s more suitable for doing sports.