Weather watches and warnings are issued when potentially hazardous weather is occurring or is forecast for the short term period. Some of those bulletins have been changed on April 8, 2014 and below is a list and definitions of the up-to-date watch and warning.
Measuring Eye Pressure. Eye pressure is measured in millimeters of mercury (mm Hg). Normal eye pressure ranges from 12-22 mm Hg, and eye pressure of greater than 22 mm Hg is considered higher than normal.When the IOP is higher than normal but the person does not show signs of glaucoma, this is referred to as ocular hypertension.High eye pressure alone does not cause glaucoma. However, it is a significant risk factor.hen the IOP is higher than normal but the person does not show signs of glaucoma, this is referred to as ocular hypertension. High eye pressure alone does not cause glaucoma. However, it is a significant risk factor.
The causes for elevated eye pressures are only partially known. In some individuals, a specific cause can be identified. High eye pressure is always related to some increased resistance or obstruction of the normal outflow of fluid inside the eye. Inside the eye, fluid is constantly being manufactured and has to drain from inside the eye. The pressure will only elevate if the drainage system in the eye is somehow not functioning properly. With injury or trauma, for example, the drainage system can be blocked in the eye, hopefully only temporarily. However, in most individuals with elevated eye pressure and glaucoma, the drainage system appears normal but is not functioning properly.