With Halloween right around the corner, there are many people that go the extra mile to complete their costume and use decorative contact lenses. Many of these lenses can be bought online, but they can do permanent damage too. People are buying these online or over the counter and some even come with labels that say they are safe to wear, but the U.S. Food and Drug Administration have not approved them. The only safe way to get a pair of these is with a prescription in order to avoid injury. When you get contact lenses, your eye doctor measures your eye so it properly fits, but a poor fit can scratch the cornea, give you pink eye, corneal infection, decreased vision, and even blindness.