Non-prescription costume contacts can cut, wanda and vision costumes scratch and infect your eye if they don’t fit exactly right. After you have been to an ophthalmologist and received a prescription, be sure to only buy costume contacts from retailers who require a prescription to purchase the lenses and who only sell FDA-approved contact lenses. Is it safe to wear non-prescription colored contacts? While costumes can be a bit tedious to make, the effort pays off at the end of the day when a cosplayer is wearing costumes that look and feels just like their favorite character.