Superior or inferior rectus shortening

Treating diseases: strabismus Indication Upper or lower rectus shortening applies to: 1. The superior rectus abdominis surgery is suitable for the lower strabismus with weak or straight rectus muscles or weak upper oblique muscles. 2. Lower rectus shortening is suitable for upper strabismus with weak or straight rectus muscles or weak underlying oblique muscles. Contraindications 1. A lower strabismus in which the oblique muscles of the lower eye are weak. 2. Upper strabismus with weak onset of the oblique muscle in the eye. Surgical procedure The above rectus muscle shortening is taken as an example. 1. Make a limbus trapezoidal conjunctival incision and separate the connection between the bulbar conjunctiva and the fascia. 2. Cut a small hole in the fascia on both sides of the superior rectus adhesion point, vertically separate to the sclera and fully expose, and separate the sclera from the fascia along the bilateral rectus muscle. 3. From one side of the small hole into the strabismus hook, with the sclera sliding under the superior rectus muscle, to reach the opposite side of the hole. If the top of the squint hook is blocked by the fascia, it is separated. So from left to right, from right to left, repeated 2 to 3 times, can hook the entire superior rectus muscle. 4. Separate the fascia and intermuscular membrane along the two sides of the superior rectus muscle to fully expose the superior rectus muscle. 5. On both sides of the upper rectus muscle attachment point 1.5mm, use 6-0 absorbable suture or nylon thread as the collar preset suture, and cut the upper rectus muscle from the attachment point. 6. Measure the distance to be shortened. Make a preset suture on both sides of the rectus muscle at 1.5 mm behind it, cut the upper rectus muscle before it, and cut off the stump from the attachment point. 7. Sew the preset stitch back to the original attachment point. 8. Observe the eye position and eye muscle activity, and adjust if necessary. 9. Stitch the conjunctiva. complication The eye cracks become smaller after surgery.