Coloured contacts are the last and most rushed purchase of any Halloween costume. Around the 28th you think “it's only for one night” and reach for an online basket. In Korea that order is blocked by statute — and if you have lived here a while, you may never have been told why.
1. Zero power is still a contact lens. The statute narrows glasses to “for vision correction only” and widens contact lenses to “including those «not» for vision correction” — the two parentheses run in opposite directions.
2. That is why online sales are prohibited. “No person” may sell them by e-commerce or mail order, and purchase-agent and forwarding services are named in the same provision.
3. Buying in a shop comes with things you must be told. The statute requires the optician to give you usage, expiry and side effects. If none of that came up, a required step was skipped.
Two parentheses, pointing opposite ways
The basis is the Medical Service Technologists Act. The title sounds unrelated to Halloween contacts, but one line in the definitions settles everything.
Article 1-2 (Definitions) 3. “Optician” means a person whose principal duties are the preparation and sale of glasses (limited to those for vision correction) and the sale of contact lenses (including those not for vision correction), and the performance of refraction tests without medication …
Within a single sentence the two brackets move in opposite directions. Glasses are narrowed; lenses are widened. Cosmetic coloured lenses, circle lenses and cosplay lenses all sit inside.
| Item | Statutory scope | If it has no power |
|---|---|---|
| Glasses | «limited to» vision correction | plain fashion frames are not “glasses” under this Act |
| Contact lenses | «including» those not for vision correction | coloured, circle and cosplay lenses are all in |
📌 Why opposite? The text gives no reason. It reads coherently if you separate what sits «on» the eye from what sits «in front of» it — zero power still means something resting on the cornea. That reading is ours, not words in the statute.
So it cannot be bought online — “no person”
Article 12 (Registration of optical shops, etc.)
(5) No person shall sell glasses or contact lenses by any of the following methods:
1. electronic commerce or mail order under article 2 of the Act on Consumer Protection in Electronic Commerce;
2. acting as agent for purchase or delivery from a seller's cyber mall, and other methods prescribed by Ministry ordinance.
(6) An optician shall sell glasses and contact lenses only at an optical shop.
The subject is “no person”, not “an optician”. Whether the seller is an optician or not, a Korean mall or an overseas forwarder, the same provision applies. And subparagraph 2 names purchase agents and forwarders separately — the workaround was closed in the text itself.
| If you buy this way | Under the text | Penalty |
|---|---|---|
| Korean mall or open market | art. 12(5)1 breach | seller: fine up to ₩5,000,000 |
| Overseas site via purchase or delivery agent | art. 12(5)2 breach | seller: fine up to ₩5,000,000 |
| Optician selling away from the shop | art. 12(6) breach | that optician: up to ₩5,000,000 |
| In person at an optical shop | the place the statute intends | — |
The penalties attach to the «seller». Article 31(3-2) covers “a person who violates article 12(5)” and article 31(3-3) “an optician who sells away from the optical shop”, each a fine of up to ₩5 million. There is no provision in this Act penalising the buyer — but a lens bought that way is one that skipped the disclosure duty below.
What a shop must tell you
Article 12 (7) When selling contact lenses, an optician shall provide information on how to use them, their expiry date and side effects.
“Shall”, not “may”. On this blog we usually find the opposite when we open a provision; here it is a duty. If you did not hear all three, it is fair to ask.
| What the text requires | What to actually ask | Why it matters on the night |
|---|---|---|
| How to use | maximum hours per day; cleaning and storage | parties run long — know the limit first |
| Expiry | shelf life and the separate after-opening period | this is the night people reuse last year's pair |
| Side effects | which symptoms mean take them out now | dark venues, camera flash, long make-up wear |
If your eye hurts or the redness will not settle, find somewhere open first — the holiday emergency room article sets out how to find night and weekend care in Korea.
Checklist before you buy
- “No prescription power” is not an exemption. The definition says “including those not for vision correction”.
- Any sale that promises delivery is outside the text — domestic or overseas agent, article 12(5) catches both.
- Leave the shop having heard three things — usage, expiry, side effects (art. 12(7)).
- Ask for the after-opening period separately. It is not the date on the box.
- Reading the packaging is the fast move here, exactly as in the Halloween snack labelling article.
- Do not borrow a pair in a hurry. The statute covers selling; sharing is a separate problem.
Questions that remain
Are zero-power coloured lenses really regulated?
Yes. Article 1-2(3) of the Medical Service Technologists Act defines contact lenses as “including those not for vision correction”, while the same sentence limits glasses to “for vision correction”. Zero power does not take a lens out.
What about buying from abroad?
Article 12(5)2 names “acting as agent for purchase or delivery from a cyber mall” as a prohibited method — the agent route is closed by name. How a purely personal import is treated is not settled by this provision alone, so we do not state it here.
Is the buyer penalised?
The penalty provisions of this Act do not mention buyers. Article 31 covers the person who violates article 12(5) and the optician who sells away from the shop, each up to ₩5 million. Penalty and safety are different questions though — a lens bought online is one that skipped the article 12(7) disclosure.
Convenience stores and costume shops sell them too
The place is fixed by the text — article 12(6) says “only at an optical shop”. Selling somewhere that is not a registered optical shop falls outside it. Whether a particular shop holds that registration we cannot verify, so we do not generalise.
It is only for one night
The text has no exception based on how long you wear them. Neither the definition, nor the sales method, nor the disclosure duty carves out “just for a day”.
Zero power still rests on the cornea. That is how the split reads — glasses narrowed, lenses widened — and it is why “only for one night” appears nowhere in the provision.
Sources
- Korea Ministry of Government Legislation, National Law Information Centre — Medical Service Technologists Act, in force 11 September 2026, Act no. 21423. Source for art. 1-2(3) (glasses “limited to” vision correction; contact lenses “including those not for” it), art. 12(5), (6) and (7), and art. 31(3-2) and (3-3) (fines up to ₩5 million). Read from the source text on 17 September 2026. The Korean original is authoritative; the renderings above are ours.
- Our own reading — the “narrowed versus widened” comparison, the point that penalties attach only to sellers, and turning art. 12(7) into questions to ask in the shop are our summary of the text.
Where to check further
- A purely personal import. Article 12(5) addresses selling and agency; it contains no wording on a private individual importing directly. Customs and drug-safety rules were not examined here.
- What “after opening” means. Article 12(7) says only “expiry date” — how many days after opening varies by product and is not in the text. Ask per product.
- Device classification of contact lenses. The drug-safety agency's notices were not opened this time — this article covers who may sell, and where.
Written 17 September 2026. The provisions quoted are the source text at the National Law Information Centre; the comparison of the two parentheses and the shop questions are ours. The rest of the same night is in the Halloween snack labelling article and the crowd safety article. For eye trouble see holiday emergency care; for what to keep at home see the home first aid kit. This is general information, not medical advice.
