Published online by Cambridge University Press: 24 May 2023
Normal intraocular pressure (IOP) ranges between 10 and 22 mmHg. This pressure represents a balance between aqueous humor production and drainage [1]. An increase in IOP is harmful because it can decrease blood supply to the optic nerve [2]. Special care must be taken if the globe is open during surgery, as increased IOP in a patient with an open globe can lead to expulsion of ocular contents and permanent damage or blindness [2]. Surgeries in which there is an open globe include cataract extraction, corneal laceration repair, corneal transplant, trabeculectomy, vitrectomy, and ruptured globe repair. Other complications of increased IOP include acute glaucoma and retinal hemorrhage [1].
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