Biomaterial Database

Elevation of intraocular pressure after pars plana vitrectomy. 1976

R S Weinberg, and G A Peyman, and F U Huamonte

To determine the incidence and causes of increased intraocular pressure (IOP) after pars plana vitrectomy with the vitrophage, we studied 118 eyes under-going vitrectomy during a one-year period. Fifty-one (43%) were in diabetic patients; 67 (57%) were in nondiabetics. Of the entire group, 33 (28%) developed a postoperative increase in IOP, which was defined as a rise in IOP of at least 10 mm Hg above the preoperative level by applanation tonometry. Of the diabetic eyes 25 (49%) developed increased IOP; 11 (22%) of these eyes required surgical intervention for control of IOP. Of the nondiabetic eyes eight (12%) developed increased IOP postoperatively; all were either transiently elevated or medically controllable. Postoperative rubeosis iridis occurred only in diabetic eyes.

UI	MeSH Term	Description	Entries
D006988	Hyphema	Bleeding in the anterior chamber of the eye.	Hyphemas
D007223	Infant	A child between 1 and 23 months of age.	Infants
D007429	Intraocular Pressure	The pressure of the fluids in the eye.	Ocular Tension,Intraocular Pressures,Ocular Tensions,Pressure, Intraocular,Pressures, Intraocular,Tension, Ocular,Tensions, Ocular
D007498	Iris	The most anterior portion of the uveal layer, separating the anterior chamber from the posterior. It consists of two layers - the stroma and the pigmented epithelium. Color of the iris depends on the amount of melanin in the stroma on reflection from the pigmented epithelium.
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D011183	Postoperative Complications	Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.	Complication, Postoperative,Complications, Postoperative,Postoperative Complication
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
D002675	Child, Preschool	A child between the ages of 2 and 5.	Children, Preschool,Preschool Child,Preschool Children
D003930	Diabetic Retinopathy	Disease of the RETINA as a complication of DIABETES MELLITUS. It is characterized by the progressive microvascular complications, such as ANEURYSM, interretinal EDEMA, and intraocular PATHOLOGIC NEOVASCULARIZATION.	Diabetic Retinopathies,Retinopathies, Diabetic,Retinopathy, Diabetic
D005901	Glaucoma	An ocular disease, occurring in many forms, having as its primary characteristics an unstable or a sustained increase in the intraocular pressure which the eye cannot withstand without damage to its structure or impairment of its function. The consequences of the increased pressure may be manifested in a variety of symptoms, depending upon type and severity, such as excavation of the optic disk, hardness of the eyeball, corneal anesthesia, reduced visual acuity, seeing of colored halos around lights, disturbed dark adaptation, visual field defects, and headaches. (Dictionary of Visual Science, 4th ed)	Glaucomas