Effect of Sevoflurane Concentration on Intraocular Pressure in Surgical Children With Healthy Eyes

One important goal in anesthetic management during ocular surgery is to provide adequate control of intraocular pressure (IOP). An increase in IOP may be catastrophic in patients with glaucoma or a penetrating open-eye injury. Accurate assessment of IOP is particularly important in infants and children with definite or suspected glaucoma undergoing examination under anesthesia. Anesthetic regimens in this surgical field commonly consist of short-acting anesthetic agents, such as sevoflurane. Sevoflurane is known to reduce the IOP. During pediatric ocular surgery, the inspired sevoflurane concentration varies continuously and may have an impact over the IOP that could affect the conduct of surgery. In this study the investigators wish to evaluate whether variations in sevoflurane concentration do affect the IOP.