Article in English: While over-the-counter eye drops are effective for many people suffering with pink eye, prescription eye drops are more powerful and may rid you of the illness sooner.  Treat bacterial conjunctivitis with antibiotic eye drops. Antibiotic eye drops are a topical treatment that attacks the bacteria directly. They usually clear the infection within several days, but you should notice improvement after the first 24 hours. Follow your doctor's instructions concerning application. Treat allergic conjunctivitis with antihistamine or steroid eye drops. While some antihistamine eye drops can be purchased over-the-counter, stronger versions are available by prescription. Severe allergies are sometimes treated with eye drops containing steroids, as well. Antibiotic ointment is easier to apply than eye drops are, especially for children.  Note the ointment blurs vision for 20 minutes after being applied, but the patient's vision should clear up after that time passes. Bacterial conjunctivitis should be gone after a few days with use of this treatment. If your doctor suspects that your viral conjunctivitis is caused by the herpes simplex virus, he may decide to put you on some form of antiviral medication. Antiviral medications may also be an option if you have certain preexisting health conditions that have weakened your immune system.

Summary in Vietnamese:
Sử dụng thuốc nhỏ mắt theo toa. Sử dụng thuốc bôi mắt có chứa kháng sinh. Tìm hiểu về thuốc kháng virus.