Illegal sale of contact lenses can result in civil penalties of up to $16,000 per violation. If you see contact lenses being sold by retailers not requiring a prescription, you can report the retailer to the FDA. Dr. Steinemann also warns that counterfeit lenses are common if you’re buying through an illegal outlet. Illegally sold circle lenses bypass several crucial safeguards, such as a lens fitting and instructions about wear and care that are specific to you, your eyes and the contacts you are prescribed.