The effect of position modification on Intra-ocular pressure, during Robotic Assisted Laparoscopic Radical Prostatectomy - A Randomized control study.

We change the patient's position during robotic assisted laparoscopic radical prostatectomy by using the standard head down trendelenburg position with elevating the head and shoulder to horizontal level and named it; "Modified Z" Trendelenburg position. IOP, blood pressure and endotracheal Co2 - measured at the induction of anaesthesia in supine, before positioning, head down, after that group 1 patients have thier head and shoulders in modified horizontal position. All patients will have those parameters checked also after pneumo-peritoneum and every 30 minutes, at the end of the operation all patients will be in horizontal supine position, with IOP checked at cease of pneumo-peritoneum, and before awakening. The surgery was not changed as a result of the positioning modification.