Erythromycin Ophthalmic Ointment has antibacterial, anti-inflammatory and moisturizing properties. It is mainly used for the treatment of eye infection diseases, including trachoma, conjunctivitis, blepharitis, and external eye infections. Erythromycin ophthalmic ointment belongs to macrolide antibiotics, the mechanism of action is to inhibit bacterial proteins, it has obvious antibacterial activity against gram-positive bacteria and Chlamydia trachomatis. Adverse reactions that can occur in patients after application include symptoms such as eye pain, blurred vision, persistent redness, and a feeling of skin irritation. Current clinical trials do not clarify the contraindications to erythromycin ophthalmic ointment, but it is contraindicated in patients who are allergic to the drug components in this medication. If you need to use erythromycin ophthalmic ointment, it is recommended that you consult a professional doctor and follow the doctor’s instructions for standardized treatment, not blindly self-medication.