Viral meningitis is common and contagious, but it is rarely serious or fatal and does not require antibiotics. The more serious meningococcal bacteria are the leading cause of meningitis in adolescents ages 11 to17, and while theyâre rare, they can be fatal.
Test Overview. A tonometry test measures the pressure inside your eye, which is called intraocular pressure (IOP). This test is used to check for glaucoma, an eye disease that can cause blindness by damaging the nerve in the back of the eye (optic nerve ).
Noun. 1. IOP-pressure exerted by the fluids inside the eyeball; regulated by resistance to the outward flow of aqueous humor; glaucoma can result from increased intraocular pressure.intraocular pressure.. IOP-pressure exerted by the fluids inside the eyeball; regulated by resistance to the outward flow of aqueous humor; glaucoma can result from increased intraocular pressure.