A COMPARATIVE STUDY BETWEEN 1MG AND 3 MG OF GRANISETRON IN THE PREVENTION OF POSTOPERATIVE NAUSEA AND VOMITING IN STRABISMUS OPHTHALMIC SURGERIES DURING GENERAL ANESTHESIA

Inclusion Criteria: * • Adult patients \> 18 years old. * ASA I and II. * Patients scheduled for strabismus surgery. Exclusion Criteria: * • ASA class \> II. * Patients with known hypersensitivity or contraindication to any of the study medications. * Patients who had chronic nausea and vomiting or experienced retching, vomiting, moderate to severe nausea in the preoperative day. * Patients who had received an antiemetic drug in the preoperative day. * Patients with a body mass index ≥36. * Pregnant or breast feeding female patient. * Patients with gastrointestinal diseases. * Patients with a history of motion sickness, diabetes mellitus, and GIT pathology (gastritis, hematemesis, peptic ulcer).