Background and Purpose Although it is often assumed in experimental stroke studies that cautery-induced occlusion is permanent, surgeons commonly expect cauterized vessels to recanalize spontaneously. We used the rat middle cerebral artery to determine if electrocoagulation would produce a permanent occlusion in this preparation. Methods and Results A standard bipolar coagulator, calibrated to ...

To overcome the problems of surgical treatment of tumors of the posterior segment, we have developed a ring-shaped instrument. This is sutured to the sclera or the area ivhere resection should be performed. Besides stabilizing the operative area, the two side arms of the instrument prevent collapse of the eyeball. The fidl-thickness eye wall resection i? performed with the cutting needle of the...