subretinal drainage

When the retinal detachment is shallow, the rupture is located on the ridge after cerclage or external compression, and the subretinal fluid may not be drained without retinal fluid around the rupture. Treatment of diseases: primary retinal detachment and retinal detachment Indication Retinal detachment is higher. After scleral cerclage or external compression, there are still more subretinal fluid in the hiatus, which affects the hiatus and choroidal closure. At this time, the drainage of subretinal fluid should be used. Contraindications The age of the body is weak, the vital organs such as the heart and lungs are poor, and the surgery does not restore hope. Preoperative preparation Antibiotics are routinely used before surgery. Surgical procedure 1. Observe the fundus to select the site of the discharge. In order to avoid damage to the vortex vein, the optimal drainage site should be selected below the upper and lower edges of the medial and lateral rectus muscles and below the superior and inferior rectus muscles. Nasal discharge is safer than the temporal side, and the lower discharge is safer than the upper side. 2. Make a 3 mm long vertical incision on the sclera until the choroid is exposed. A pair of -type sutures can be preset at both ends of the slit, and the slit is closed after the liquid is discharged. The choroid is pierced with an electrolytic needle or a coagulation needle. Be careful to choose a needle of the appropriate length to avoid injury to the retina. complication 1. Unsuccessful drainage is often caused by the sliding effect caused by the needle not penetrating the sclera. The direction can be re-punctured or the puncture site can be selected. It can also be thicker than the sclera and choroid, and it is not completely penetrated. A slightly longer needle can be used at this time. When the intraocular pressure is low, it is not easy to release the liquid. The cerclage can be tightened to increase the intraocular pressure, or the sclera on both sides of the discharge port can be clamped with tissue sputum, and then puncture. 2. When choroidal hemorrhage occurs at the puncture site, first tighten the suture of the discharge port, and shorten the cerclage band to increase the intraocular pressure. After the bleeding stops, another drainage incision is made. 3. If the discharge port is too large, the retinal infusion can be caused by too fast discharge. Once retinal incarceration occurs, the incarcerated area should be condensed and then pressurized with a silicone sponge to create a higher ridge in the eye. 4. When the puncture force is large, the retina can be penetrated. Some patients can find retinal hemorrhage on the retina corresponding to the puncture site. Deal with the retinal incarceration.