Epidemic ophthalmia, also known as contagious cornea, conjunctivitis. Acute inflammation of the cornea and conjunctiva is accompanied by massive tearing, followed by corneal opacity or milky white appearance. Infectiously, the incidence rate can reach 100%. 1. Pathogens and diseases The pathogen of this disease is Rickettsia. Pathogens are mainly found in the conjunctiva and its secretions and can be transmitted through direct contact. Hot, windy, dusty and other factors contribute to the occurrence and spread of the disease. The disease has no obvious seasonality and can be popular throughout the year. 2. Symptoms of the onset of the first violation of the conjunctiva, and then spread to the cornea. At the beginning of the disease, the eyes are afraid of light, tears, eyelid swelling, pain, conjunctival flushing, and mucus secretions. Consequent corneal hyperemia, gray and white turbidity, severe ulceration, corneal perforation, and even blindness. The blind sheep died of starvation due to difficulties in eating. Generally, sheep are treated in time and can recover within 1-2 weeks. 3. Prevention (1) The diseased sheep were found to be isolated in time to prevent infection. The place where the diseased sheep have been exposed should be thoroughly disinfected. (2) Rinse the affected eyes with 3-4% boric acid water, and use tetracycline, erythromycin, cortisone ointment or chloramphenicol eye drops 2 or 3 times a day for several days. (3) Chinese medicine therapy: 10 grams of borax, 10 grams of white peony, 10 grams of Nepeta, 20 grams of jade, 20 grams of mint, cut water to feed, one dose per day, and even three doses; wild chrysanthemum, fresh mulberry leaf, Plantain one each, 20 grams of raw gypsum, Jianshui feed, one dose per day, for several days. China Agricultural Network Editor
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