Pterygium excision

The pterygium is a chronic inflammatory lesion caused by chronic stimulation of the conjunctiva, named after the insect wings. When the pterygium progressively covers part or all of the pupil, it affects vision and eye movement, and can be treated surgically when affecting aesthetics. Previous surgical methods include simple excision of pterygium, transfer of pterygium, removal of condyloma and conjunctival transplantation, and transplantation of keratoconjunctival flap. The operation is varied but no surgical method is superior to other methods. The difficulty is that the cornea can not be made. The surface is smooth and smooth and repaired as soon as possible. The recurrence rate of pterygium is about 20 to 30%. It is difficult to re-operation, so it should be successful once. Treating the disease: pterygium cataract Indication 1. Progressive pterygium. 2. The flesh covers some or all of the pupils and affects the visual acuity. 3. The pterygium affects the eye movement. 4. As a pre-treatment before cataract or corneal transplantation. 5. Winged meat is a hindrance to the appearance. Contraindications 1. Chronic conjunctivitis with mucus secretions, active trachoma lesions, chronic dacryocystitis and varus vertices should be treated first, and 3 months after the complete cure is feasible. 2. Patients with a history of drugs or other allergies should not be operated temporarily. The cause of allergies should be checked, desensitization treatment should be performed, and normal operation can be performed before surgery. 3. Recurrent pterygium, rehabilitated after a recurrence of surgery, and some even did 3 to 5 operations within a year, and finally to the sputum adhesion. Therefore, it is necessary to wait until the postoperative recurrence response is completely still after 6 months before surgery. Preoperative preparation 1. A detailed understanding of the patient's general condition, patients with hypertension, diabetes should first medical treatment, after the condition is stable, then consider the operation of the meat; stools have parasite eggs should be treated with parasites. 2. Check the eye area carefully and make sure there are no contraindications. Patients with obvious conjunctival hyperemia should be treated with antibiotic eye drops and corticosteroid eye drops first, and then surgery should be performed after the congestion is reduced or significantly reduced. 3. Use antibiotics for 1 week before surgery. Surgical procedure 1. Open the eyelids to open the eyelids. 2. Use a toothed tweezers to hold the head of the meat, and make a shallow corneal incision 0.5 mm from the edge of the cartilage. Carefully separate the carcass tissue from the corneal tissue to the limbus. 3. Cut the conjunctiva on both sides of the carcass, separate the adhesion at the limbus, and bluntly separate the tissue on the sclera. 4. Separate the body of the conjunctival tissue under the conjunctiva to a half-month fold. Remove all the flesh tissue that has been separated. 5. After the scleral surface is hemostasis, the surface of the sclera should be carefully scraped, so that the surface of the sclera must be smooth and flat. Then, the resected conjunctival margin was sutured to the scleral surface of about 2 to 4 mm outside the angle of the sclera, and part of the scleral surface was exposed. 6. Conjunctival sac coated with antibiotic eye ointment, including surgery eyes. complication Infectious keratitis occurs after surgery, which is the most serious postoperative complication. Preoperative preoperative and preoperative preparations should be performed for each patient before surgery, and conjunctival sac culture should be performed before surgery if necessary. For patients with chronic dacryocystitis or conjunctivitis, thorough treatment should be performed before pterygium is applied. Once bacterial keratitis occurs, it should be discovered as soon as possible and treated promptly.