





Smile The Medical A DX Contact
Corneal care eye drops with the maximum amount of vitamin A that can be applied while wearing Contact lenses
For these people and situations
Product overview
Smile The Medical A DX Contact is a Class 3 OTC Drug eye drop designed exclusively for Contact lens wearers in Lion Corporation’s Smile DX series. Contains the maximum amount of vitamin A (retinyl palmitate) within standards (50,000 units), penetrating damaged corneal cells to promote hyaluronic acid production and support corneal repair. Also promotes mucin production to stabilize tears, helping care for eye fatigue caused by dryness and overuse (Method patent No. 5549669).
Formulated with added chondroitin sulfate ester sodium to protect the cornea from damage caused by friction and dryness from Contact lenses, designed with corneal care for Contact users in mind. Usable with all Contact lenses except colored Contact lenses, with a mild formula free of cooling agents for a gentle, non-stinging eye drop experience. Please consult a doctor, pharmacist, or registered seller if you have any questions.
Product features
Usable with all Contact lenses
Compatible with soft, O2, hard, and disposable lensesCan be used while wearing all Contact lenses except colored Contact lenses. Allows easy eye care on the go without removing Contact lenses.
Repairs the cornea with the maximum amount of vitamin A
Retinyl palmitate 50,000 unitsContains the maximum amount of vitamin A within standards. Penetrates corneal cells to promote hyaluronic acid production and support corneal repair. Promotes mucin production to retain tears (Method patent No. 5549669).
Contains corneal protective ingredient chondroitin
Chondroitin sulfate ester sodiumContains ingredients that protect the cornea from damage caused by friction and dryness from Contact lenses. Formulated with corneal care for Contact users in mind.
Preservative-free, cooling sensation level 0
Lion’s unique preservative power technologyFormulated without preservatives such as benzalkonium chloride, using Lion’s unique technology to ensure preservative effect. Level 0 formula without cooling agents, providing a gentle sensation even when wearing Contact lenses.
Active ingredients (per 100 mL)
| Ingredient name | Content amount | Action classification |
|---|---|---|
| Retinyl palmitate (vitamin A) | 50,000 units | Corneal repair |
| d-α-Tocopheryl acetate (natural vitamin E) | 0.05g | Metabolism promotion |
| Chondroitin sulfate ester sodium | 0.05g | Corneal protection |
Indications and effects
Dosage and administration
| Amount per application | Number of times to apply per day |
|---|---|
| 1 to 3 drops | 3 to 6 times |
・When used by children, use under the guidance and supervision of a guardian.
・Do not let the tip of the container touch your eyes, eyelids, or eyelashes (to prevent contamination or foreign matter). Do not use if the solution is cloudy.
・Contains high-viscosity ingredients. Vision may temporarily appear blurry after use, so please be careful.
・For eye drop use only.
Smile DX Series Comparison
| Comparison items | 【Smile The Medical A DX Contact】 |
Smile The Medical A DX |
Smile 40 Premium DX |
Smile 40 Mediclear DX |
|---|---|---|---|---|
| Classification | Class 3 OTC Drug | Class 3 OTC Drug | Class 2 OTC Drug | Class 2 OTC Drug |
| Main target symptoms | Dryness, fatigue from overuse, blurriness (contact lens compatible) | Dryness, fatigue from overuse, blurriness | Eye fatigue, blurriness, redness, itching | Itching, redness, inflammation, blurriness |
| Vitamin A content | 50,000 units (maximum amount) | 50,000 units (maximum amount) | 50,000 units (maximum amount) | 10,000 units |
| Number of active ingredients | 3 types | 3 types | 10 types | 7 types |
| Corneal protective ingredients (Chondroitin) |
Yes (0.05g) | Yes (0.1g) | Yes (0.1g) | None |
| Itch suppression and redness removal | None | None | Yes (both) | Yes (both) |
| Herbal-derived anti-inflammatory ingredients | None | None | None | Berberine + Glycyrrhizic acid (double formulation) |
| Cooling sensation | Level 0 (Mild, non-stinging) | Level 0 (Mild, non-stinging) | Level 4 (Cool) | Level 4 (Cool) |
| Use while wearing contact lenses | Compatible with all types (except colored CL) Soft, O2, Hard, Disposable |
Hard lenses only | Hard lenses only | Hard lenses only |
| Preservative | Additive-free | Additive-free | Additive-free | Additive-free |
| For these users | Contact lens users who want to easily apply eye drops while wearing lenses | For those whose main concerns are dryness and fatigue and are looking for eye drops that don’t sting (for naked eyes and hard lenses) | For those concerned about a wide range of symptoms from eye fatigue to redness and itching | For those who want to care with herbal-derived ingredients especially for severe itching and redness |
🌱 Brand Story
Lion Corporation’s "Smile" is an ophthalmic drug brand loved in Japan for many years. The DX series, born from continuous research at Lion’s unique "Corneal Research Institute," developed a proprietary formula (patent No. 5549669) that enhances vitamin A corneal penetration under the concept of "healing from the cornea." Smile The Medical A DX Contact is a dedicated product for contact lens users, enabling easy corneal care during wear. Combined with Lion’s unique technology that achieves excellent preservative effects without preservatives, it embodies the brand’s sincere approach to eye care.
- Please consult a doctor, pharmacist, or registered seller before use: Those receiving medical treatment. Those who have had allergic reactions to medications. Those with severe eye pain. Those diagnosed with glaucoma.
- If rash, redness, itching, eye redness, itching, swelling, stinging, or pain occurs after use, stop using immediately and consult a doctor, pharmacist, or registered seller.
- If eye blurriness does not improve, or if symptoms do not get better after about two weeks of use, stop using and consult a doctor, pharmacist, or registered seller.
- Do not use while wearing colored contact lenses.
- Because it contains high-viscosity ingredients, your vision may temporarily appear blurry after use.
- Do not let the tip of the container touch your eyes, eyelids, or eyelashes. Do not use if the solution is cloudy.
- Avoid direct sunlight and store in a cool place as much as possible.
- Keep out of reach of children.
- Do not transfer to other containers (this may cause misuse or change the quality).
- Do not use the product after the expiration date.
- Please use as soon as possible after opening.


















































































