Figure 4a. Surgical treatment of retinal detachment. (a) Intraoperative photograph obtained before placement of a scleral buckle shows use of a direct ophthalmoscope to position a cryoprobe (arrow) directly over a retinal tear, thus producing chorioretinal adhesions. (b) Intraoperative photograph obtained after application of a circumferential silicone band (arrow). Sutures around the extraocular muscles are used to control the position of the eye during the procedure.