Eye Pressure Test Numbers

When the iop is higher than normal but the person does not show signs of glaucoma this is referred to as ocular hypertension. The eye has a jelly like substance called vitreous humor filling most of the back part of the eye. The pressure that the cornea pushes back onto the tonometer is measured in millimeters of mercury giving your eye doctor a number to record and compare to from year to year.
eye pressure test numbers

Pressure inside the eye rises damaging the optic nerve.

Eye pressure test numbers. These daily changes are normal. The most common type of tonometry test is called the goldmann applanation tonometry test. The mm hg refers to millimeters of mercury which is a scale for recording the eye pressure. Tonometry is a quick and simple test that checks the pressure inside your eyesthe results can help your doctor see if youre at risk for glaucoma.

Measuring it is like measuring blood pressure. However some people can have ocular hypertension without developing any damage to their eyes or vision as determined by a comprehensive eye exam and visual field testing. A diagnosis of glaucoma will require more than just eye pressure measurement because it is possible to have glaucoma and have normal eye pressure. Normal eye pressure ranges from 12 22 mm hg and eye pressure of greater than 22 mm hg is considered higher than normal.

Non contact tonometry non contact tonometry nct is commonly referred to as the air puff test. This pressure check is called tonometry. Ocular hypertension means the pressure in your eyes your intraocular pressure iop is higher than normal. In the past you may have had an eye pressure test using a puff of air.

As part of a complete eye exam your ophthalmologist or an assistant will measure your eye pressure. Normal intraocular pressures average between 12 22 mm hg. Eye pressurealso called intraocular pressure or iopis a measurement of the fluid pressure inside the eye. Many factors can affect the up and down changes in a persons intraocular pressure.

Tonometry is an eye test that can detect changes in eye pressure long before you may be aware of them. Left untreated high eye pressure can cause glaucoma and permanent vision loss in some individuals. This is often how glaucoma develops. Glaucoma is a disease in which the nerve of.

Eye pressure can vary hourly daily and weekly. Tests to detect changes in eye pressure the test most commonly used to measure intraocular pressure is tonometry which is often used to screen for glaucoma. Eye pressure is measured in millimeters of mercury mm hg. A more watery liquid called aqueous humor also is present.