conjunctival cover repair

The conjunctiva is a layer of mucosa that covers the upper and lower eyelids and in front of the eyeball. It is a transparent film formed by a multi-layered columnar epithelium and a small amount of connective tissue. The lining of the inside of the eyelid is the sacral conjunctiva, and the anterior eyeball is the conjunctiva. The conjunctiva is rich in blood vessels and nerve endings, and has a small amount of mucous glands, which can secrete mucus and smooth the eyeball to reduce the friction between the conjunctiva and the cornea. Chlamydia trachomatis mainly invades the conjunctiva and sacral conjunctiva. Acute bacterial conjunctivitis and viral conjunctivitis are caused by bacteria and viruses infecting the conjunctiva and are contagious. Treating diseases: corneal ulcers Indication 1. Non-surgical treatment is ineffective, and close to the perforated peripheral corneal ulcer or corneal spasm, feasible partial conjunctival occlusion. 2. When the limbal wound is split, the iris is prolapsed, and the wound cannot be directly sutured, the partial conjunctival occlusion can be performed. 3. For patients with a wide range of corneal ulcer treatment, consider the global conjunctival cover. 4. Eyeball atrophy is not willing to remove the eyeball, consider global conjunctival occlusion. Contraindications 1. The cornea has been perforated and has a tissue defect. 2. There is no atrophy in the eyeball, there is still a light sensation; or the corneal wound is small, and other operations may still be repaired. Preoperative preparation 1. The necessary bacteria, fungal scraping and culture, or biopsy should be done to determine the cause of the disease as much as possible. 2. Drip the antibacterial eye drops. 3. Rinse the lacrimal passage. 4. Conjunctival sac flushing. Surgical procedure 1. Cut the bulbar conjunctiva from 12 to 6 o'clock along the limbus. According to the size of the corneal wound, it should be 2 mm wider than the lesion area. Make a second incision on the outside of the first incision. The two incisions are parallel to each other. 2. Peel the subconjunctival tissue and make a bridged conjunctival flap. The corneal lesion was treated and fixed with a silk thread on the surface of the sclera near the limbus for ligation.