Dionin Eye Drops, also known as Ethyl Morphine Eye Drops, has the effect of promoting the absorption of conjunctival congestion, relieving the sensation of eye pain as well as promoting the fading of corneal cloudiness. When the patient’s eye is stimulated, resulting in conjunctival vasodilatation and filling, the conjunctival congestion will be formed, the patient can follow the doctor’s instructions to use ethyl morphine eye drops, in order to constrict blood vessels, so as to improve the patient’s conjunctival congestion. In addition, the drug itself can also affect the corneal tissue metabolism, which is also helpful in promoting the fading and absorption of corneal cloudiness and reducing the pain in the eyes. At present, the adverse effects of this drug are not clear, patients who are allergic to this drug are prohibited from using this drug. Patients are advised to use Ethyl Morphine Eye Drops in accordance with medical advice, do not use without authorization, to avoid causing adverse reactions.