horizontal muscle shortening

Curing disease: Indication 1. Internal rectus shortening is suitable for exotropia, especially in cases where the convergence is insufficient or the separation is too strong. The inner rectus muscle is excised from a part of the tendon and muscle, and then sutured at the original attachment point to enhance the strength of the inner rectus muscle. The effect is reliable and is a commonly used surgical method. 2, external rectus shortening is suitable for esotropia, especially the lack of esotropia. Contraindications The muscles to be operated on are completely paralyzed, the muscles are weak and weak, and when there is no elasticity, the shortening is of no practical significance. Surgical procedure 1, bulbar conjunctival incision: the use of the above limbal incision method to separate the connection between the bulbar conjunctiva and the eye fascia. 2. 2mm outside the attachment point of the medial rectus and 2mm outside the lower edge, use scissors to cut the eyeball fascia into a small hole and reach the sclera. To fully expose the sclera. And use scissors to reach into the small hole, lightly scleral, along the inner rectus muscle, and then separate the relationship between the fascia and the sclera on both sides of the eye muscle. 3. The squint hook is inserted into the small hole, and the light top sclera slides under the inner rectus muscle and passes through the opposite side hole. If the squint hook is on the eyeball fascia, it can be cut with scissors. This can be repeated from top to bottom, from bottom to top 2 to 3 times, it is necessary to hook the entire internal rectus muscle. 4. Cut the eyeball fascia, the ligament and the intermuscular membrane along the upper and lower edges of the inner rectus muscle. The longitudinal ligament and the intermuscular membrane are about 10 mm long, and the inner rectus muscle is fully exposed. 5. The squint hook is pulled down, and the distance between the cuts is measured by two feet. At the 1st and 5mm thereafter, a 6-0 absorbable double loop muscle suture is preset on the upper and lower sides of the muscle. 6. Use a hemostat to clip the inner rectus muscle. Use scissors to cut the medial rectus muscle from the pre-sewing stitch. 7. Cut off the remaining tendons and muscles at the attachment point. 8. Knock the preset stitches through the root of the attachment point and tie them at the front. 9. Open both eyes to observe the function and correction of the eye muscles, and then adjust the surgical plan if necessary. 10. Suture the conjunctiva.