Coloured contacts are medical devices
In the US, the FDA classifies contact lenses, including plano cosmetic lenses, as Class II medical devices. Selling them without a prescription is illegal. The EU and UK regulate them as Class IIa or IIb devices under MDR and UKCA rules. Japan requires them to be approved by the PMDA and sold by licensed distributors.
What that means when you buy online
A legitimate seller will ask for a prescription or verify that plano lenses are legal in your market, and will never sell a lens that has not been cleared for that market. If a shop sells cosmetic lenses with no questions asked and no returns policy, that is a warning sign rather than a convenience.
Plano versus prescription
Plano (0.00) lenses are still regulated devices. They are legal to buy without a vision correction in several markets, but they must be cleared devices and they still carry the same hygiene requirements.
The hygiene rules that matter most
Never sleep in lenses that are not approved for extended wear. Never rinse lenses in tap water. Replace daily lenses every day and monthly lenses every month, even if they feel fine. Wash and dry hands before touching a lens, and stop wearing immediately if the eye becomes red, painful or blurry.
Symptoms that mean remove the lens now
Pain, sudden redness, light sensitivity, discharge or a drop in vision are reasons to remove the lens and see an eye care professional the same day. Corneal infections progress quickly and are far easier to treat early.
Choosing a seller
Look for a published returns policy, a real contact address and clear specification data. Lensora publishes shipping and returns terms for each market and lists DIA, base curve, water content and replacement cycle on every product page.
Frequently Asked Questions
Can I buy coloured contacts without a prescription?
It depends on the country. In the US, plano cosmetic lenses still require a prescription by law. In parts of the EU and Asia the rules differ, which is why sellers verify before shipping.
Are cheap coloured contacts dangerous?
Uncleared lenses and poor hygiene cause most problems, not price itself. A cleared device worn correctly is safe; an unclear device worn correctly is still a risk.
How long can I wear them in a day?
Follow the manufacturer's stated maximum and start shorter. Most daily lenses are designed for up to 8-12 hours, not for sleep.
