episcleral pressure

Scleral extravasation is performed by using a material such as silica gel or silicon sponge, which is pressed into the sphere by the surface of the sclera, and can be pressed against the hole in a large area for a long time. The operation is simple, the scope of application is wide, and the application is flexible. At the same time, due to the use of condensation to close the hole, the complications are greatly reduced, and it is widely used in clinical practice. Treatment of diseases: retinal tear retinal detachment Indication 1. Suitable for all kinds of holes, including small holes, cluster holes, horseshoe holes, large holes, fish-shaped holes and retinal detachment. 2. Vitreous traction, retinal fixation wrinkles. 3. Cases of failure or recurrence of retinal detachment surgery. 4. Combined with vitreous injection, scleral cerclage or vitrectomy, it can be used in more difficult and complicated cases, such as giant retinal detachment and 062D retinal detachment. Contraindications Patients with inflammation in the eye should undergo anti-inflammatory surgery. Surgical procedure 1. After the meridian direction is pressed and the hole is marked and condensed, the needle is inserted into the needle in the vertical cornea direction with 4% to 6% double shovel polyester thread, and the needle insertion position is 2 to 3 mm from the side edge of the slit. The needle travels 3 to 5 mm in the sclera. The outer pressure is selected from a silicone sponge whose diameter should be at least 1 mm larger than the edge of the slit. The suture of the fixed silicon sponge is wound for three weeks, and three knots are applied to each pair of sutures. 2. Parallel limbal direction external pressure hole mark and condensation, before and after the hole, use 4-0 to 6-0 double needle polyester thread parallel to the corneal direction to enter the needle, make the h-shaped suture, the needle insertion point from the front edge of the hole 2 to 3 mm respectively (Figure 3). The external pressurization is preferably selected from the group consisting of dura or artificial dura mater, autologous fascia, sclera and the like. The outer pressurization was made to have a roll thickness of 2 mm, and the width and length were determined according to the size of the slit. The needle walks 3 to 5 mm in the sclera, and each pair of needles is 2 to 3 mm apart. complication infection.