There are several common “pink eye” diseases. The first is acute khat conjunctivitis, often caused by Koch-Weeks bacillus, pneumococcus, the onset of acute, conjunctival congestion eye mucus and sticky, symptoms are obvious; the second epidemic hemorrhagic conjunctivitis, mostly caused by micro ribonucleic acid (RNA) virus infection; the third epidemic conjunctivitis, introduced by adenovirus, for contact transmission. 1.What are the symptoms of pink eye? Itching of the affected eye, such as foreign body sensation, in severe cases, heavy eyelids, photophobia and burning sensation, sometimes due to secretions attached to the pupil area of the corneal surface, resulting in temporary blurred vision, after flushing can restore vision. When the lesion invades the cornea, symptoms such as photophobia, ocular pain and visual loss may be significantly aggravated, and a few patients may also have upper respiratory tract infection or other systemic symptoms. On examination, the eyelids are swollen and the conjunctiva is congested and bright red, most notably in the lid and the conjunctiva of the dome. In severe cases, the surface of the conjunctiva may be covered with a pseudomembrane that can be easily rubbed off, so it is also called pseudomembranous conjunctivitis; the bulbar conjunctiva is congested and edematous to varying degrees, losing transparency, and the cornea is covered with mucosal or purulent secretions on the surface of the conjunctiva and lid margin. 2. Is pink eye contagious and how is it transmitted? Acute catarrhal conjunctivitis is a common acute epidemic eye disease caused by bacterial infection. Its main features are marked conjunctival congestion, purulent or mucosal purulent discharge, with a tendency to heal itself. It can be transmitted through contact with the patient’s eye secretions or tear-stained objects (such as towels, handkerchiefs, washbasins, etc.), shaking hands with the patient or rubbing the eyes with dirty hands. In the summer and autumn, due to the hot weather, bacteria can easily grow and multiply, which can easily cause a pandemic. 3.Does pink eye recur? (1) If the disease is found, it should be isolated in time and all utensils should be used separately, preferably washed and dried before use. (2) Pay attention to hand hygiene. It is a good habit to wash your hands regularly, do not rub your eyes with dirty hands, and cut your nails regularly. (3) In addition to active treatment, do not use shared towels, washbasins, etc. 4.Is there a prescription for red eye treatment? There is no prescription, the best way is to go to the local hospital ophthalmology for professional consultation and treatment. 5.How is red eye treated? Do a smear of secretion or conjunctival scraping in the early and peak stages of the disease to identify the causative organism and do a drug sensitivity test. For patients with more secretions, use 3% boric acid solution or saline to rinse the conjunctival sac. According to the different pathogenic bacteria, use a variety of antibiotic eye drops, such as 10% sodium sulfamoyl, 0.25% chloramphenicol, 0.5% to 1.0% erythromycin solution or neomycin, etc., according to the severity of the disease, every 2-3 hours or even every hour; apply antibiotic eye ointment before bedtime, such as 0.5% tetracycline, erythromycin or chlortetracycline eye ointment to prevent eyelid adhesion, while keeping the drug in the conjunctival sac For a longer period of time. In case of complication of keratitis, it should be treated as keratitis. Treatment should be prompt and thorough to prevent recurrence. Please visit your local hospital ophthalmology department for treatment.