Red sharingan eyes, a blank zombie stare, a slit pupil for a demon hunter: the right lenses can finish a cosplay. They’re also the one part of a costume that sits directly on a living organ, and in the US they’re regulated that way.
This guide sets out what federal agencies and eye doctors say about decorative lenses, and how to tell a legitimate seller from one that isn’t. It isn’t medical advice. Your eye doctor is the person to ask about your own eyes.
The rule: no prescription, no lenses
The FDA treats decorative contact lenses as medical devices, overseen the same way as lenses that correct vision. Its page on decorative contact lenses is blunt: “All contact lenses must be prescribed by a doctor, including decorative lenses.” The agency also says these lenses are not cosmetics or over-the-counter products, and that sellers who sell them without a prescription, or market them as cosmetics, are breaking the law.
The FTC handles the selling side through its Contact Lens Rule. When it sent warning letters to seven retailers in 2019, the FTC said “it is illegal to sell contact lenses—even cosmetic contacts—to consumers without a prescription,” and that violations could bring civil penalties of up to $42,530 each. Its consumer alert on cosmetic contacts repeats the point that “all contacts require a prescription,” including costume lenses that don’t correct anything.
A prescription matters even if your eyesight is perfect. The FDA explains that lenses don’t fit everyone the same way and that an eye doctor, either an ophthalmologist or an optometrist, has to measure each eye. The American Academy of Ophthalmology calls “one size fits all” claims misleading and says lenses advertised with “no need to see an eye doctor” are not safe.
What can go wrong
The FDA’s list of risks from decorative lenses that are obtained without a prescription or used incorrectly includes corneal abrasion, allergic reactions, decreased vision, infection and blindness. Its consumer update adds corneal ulcers and conjunctivitis, and warns that bacterial infections can progress fast, “sometimes within as little as 24 hours if not diagnosed and treated promptly.”
The AAO gives a reason specific to colored lenses. In its guide to colored contact lenses, it says pigments make the lenses thicker and less breathable, so less oxygen may reach the eye. Elsewhere it reports on a 2015 study by researchers in Japan that found chlorine in three types of non-prescription colored lenses and iron on four pairs, and notes that four of the five lenses tested weren’t FDA-approved for sale in the US. It also warns that colorant printed onto some lenses can leave an uneven surface that may scratch the eye.
Getting a prescription that covers costume lenses
Book an exam with a licensed eye doctor and say up front that you want decorative or cosplay lenses. The FDA says a valid prescription lists the brand name, the lens measurements and an expiration date. Under the Contact Lens Rule, the FTC says your prescriber has to give you a copy of your contact lens prescription when the fitting is done, whether or not you ask, at no extra charge. The FTC’s guide for prescribers and sellers says the rule sets a minimum expiration of one year, unless there’s a legitimate medical reason for a shorter period, and state law can require longer.
Because the prescription names a brand, the store has to stick to it. The FTC says sellers may not alter a prescription, which includes substituting a brand you didn’t choose, with narrow exceptions such as identical private-label lenses from the same manufacturer. Know this before you fall for one particular design.
Reading a lens seller’s page
The FTC’s rules describe what a legitimate checkout looks like. A seller can fill an order once you give it a copy of the prescription (in person, by fax, by email with the prescription attached, or by uploading a copy or photo), or once you authorize it to verify the prescription directly with your prescriber. If the prescriber doesn’t respond within eight business hours of a complete verification request, the prescription counts as verified. That’s why an honest store asks for your doctor’s name and phone number. The FDA says sellers who don’t ask for the prescription, the prescriber’s name and the doctor’s phone number are breaking federal law.
Before you pay, check that the store’s page:
- Asks for your prescription, or your prescriber’s details for verification, before anything ships.
- Names the lens brand and says it sells FDA-cleared or approved lenses.
- Never says “no prescription needed,” “one size fits all” or anything like it.
- Won’t swap in a different brand from the one on your prescription.
The FDA also names places not to buy lenses at all: street vendors, beauty supply stores, flea markets, novelty stores, Halloween stores and unknown online distributors, whose products it says may be counterfeit or contaminated. A dealer’s booth at a con is no exception. If nobody asks about a prescription, keep walking.
Our lens store directory collects buyer reviews of lens sellers. Read them for the practical side, such as delivery and service, and still confirm the store’s prescription process yourself. Our review policy explains how reviews on the site are checked.
Wearing them at the con
The FDA’s advice for wearing decorative lenses is the same as for any contacts: follow the cleaning, disinfecting and wearing instructions you’re given, keep your follow-up eye exams, and never share lenses with anyone. The AAO adds that you should follow the storage instructions every time.
Redness, eye pain that doesn’t go away after a short time, and decreased vision can be signs of infection. The FDA says to see an eye doctor right away, and to take the lenses out if you have redness, ongoing pain or discharge. Plan for that at the con: pack the lens case, fresh solution and your glasses, so taking them out in the middle of a long day at a convention is easy rather than a crisis.
If something goes wrong, you can report it. The FDA points to MedWatch for adverse events such as lens-related infections, and to its Report a Problem form or the FTC’s complaint channels for sellers who don’t require a prescription.