Comparison of Laryngeal Mask Airway and Endotracheal Tube on Intraocular Pressure in Vitrectomy

Background: Increased intraocular pressure (IOP) is a common complication after vitrectomy. Tracheal intubation and insertion of a laryngeal mask airway (LMA) are noxious stimuli that can increase IOP. Objective: To analyze the difference between the use of LMA and an endotracheal tube (ETT) on the increase in IOP in vitrectomy. Method: Experimental study with a randomized controlled trial design in 28 patients undergoing vitrectomy who met the inclusion and exclusion criteria. Subjects were divided into 2 groups with the use of LMA and ETT. Intraocular pressure (IOP) was measured using a Schiotz tonometer before induction of anesthesia, 5 minutes after intubation, 5 minutes before extubation, 5 minutes after extubation and 24 hours after vitrectomy in healthy eyes. The analysis was carried out with the unpaired T-test and the alternative Mann Whitney test, the results were significant if the p value