Eye Pressure

Eye Pressure

Eye Pressure

Eye pressure, also called intraocular pressure (IOP) refers to the fluid pressure inside the eye. Maintaining it will help you preserve your vision and prevent vision loss from conditions like glaucoma. For eyes to stay healthy, your eye pressure should never be too high or too low. That’s because eye pressure helps support the shape of the eye, which in turn supports the parts of the eye that help you see. So, when it’s too high or too low, it can have an impact on how you see. For this reason, measuring it is important.

Just like a tire on a car, an eye can have pressure that is either too high or too low.

Why Measuring Eye Pressure is Important

Fluid inside the eye is produced everyday by a part of the eye known as the ciliary body. This fluid provides nourishment and helps the eye maintain its shape as well as healthy pressure levels. The purpose of measuring pressure inside the eye is to make sure that it is within normal range. Just like a tire on a car, an eye can have pressure that is either too high or too low. 

Although each person is different, having higher than normal eye pressure may put you at risk for a condition called glaucoma. And, having lower than normal eye pressure consistently can cause changes in your eyesight. In fact, when it is too low it can cause several distortions of the lens, retina and cornea which in turn can degrade your vision.

Eye Pressure

What is Considered Normal Eye Pressure?

Normal eye pressure helps support the shape of the eye, which in turn supports the parts of the eye that help you see. So, to keep your eyes healthy and prevent vision loss, maintaining normal IOP is very important. The normal range for IOP is between 10 and 21. But it can vary throughout the day. When it’s less than 8 mm Hg it is considered lower than normal. And, when it is greater than 21 mm Hg it is considered higher than normal.

How High is Too High

Interocular pressure which is the pressure in your eyes is greater than 22 mm Hg it is considered higher than normal. This can cause ocular hypertension. While ocular hypertension is not an eye disease in itself, it is an indication that you could develop glaucoma (see symptoms). Glaucoma is a condition that can damage the optic nerve and lead to blindness if left untreated. 

How Low is Too Low

Low IOP is generally considered to be less than 8 mm Hg. When it drops this low it can cause several distortions of the retina, lens and cornea that can degrade your vision. Ocular hypotony occurs when it drops below 5 mm Hg. If your IOP is consistently too high or too low, it could be a warning that you may have problems with your vision. 

While you may think your eyes are healthy, getting a comprehensive eye exam is the only way to be sure.

Protecting Your Vision

While you may think your eyes are healthy, getting a comprehensive eye exam is the only way to be sure. During your exam, our eye doctors will perform a tonometry test to measure your IOP and detect any changes in your eye pressure. A comprehensive eye exam which is more than just a vision test, will help us detect any eye problems at their early stages when they’re most treatable. Protect your vision today by booking your annual comprehensive eye exam. If you need more information about our eye pressure test or need help booking an appointment, call us at (805) 522-7007.