Yes, an eye pressure of 22 mmHg (millimeters of mercury) is generally considered slightly elevated or borderline high, as the normal range is typically 10-21 mmHg, making it a potential indicator for ocular hypertension, a risk factor for glaucoma, but not necessarily a diagnosis of glaucoma itself. While some sources place the upper limit at 22 mmHg or even 25 mmHg, consistent readings above 21 mmHg prompt monitoring and further glaucoma testing by eye care professionals, as a healthy optic nerve can tolerate higher pressures than a damaged one.
Normal eye pressure is 11 to 21 millimeters of mercury (written as mmHg). This is the same type of measurement used in taking your blood pressure. If your ocular pressure is higher than 21 mmHg in one or both eyes at two or more visits to your eye care specialist, then you may have ocular hypertension.
If the pressure in your eye is over 21mmHg then you may be told you have raised pressure. If it less than 30mmHg you may not be advised to have treatment, as long as everything else is healthy with your eyes and your general health.
Normal intraocular pressures average from 10-21 mm Hg. The “mm Hg” refers to millimeters of mercury, a scale for recording eye pressure. Anything that exceeds 21 mm Hg is considered hypertensive. A problem in the drainage of fluid produced in the eye causes increased pressure.
Early onset glaucoma is a term that refers to glaucoma in individuals under the age of 40. While this condition is extremely rare, it can occur in individuals during their twenties. Fortunately, early onset glaucoma can be treated and remaining vision can be salvaged when the disease is caught in the early stages.
How to Lower Intraocular Eye Pressure
Patients who are deemed to be a glaucoma suspect (borderline glaucoma) may. show some signs of glaucoma without definitive disease, or may carry risk factors. for developing glaucoma. Often, patients are classified as “low risk” or “high risk” glaucoma suspects based on the number of findings or risk factors.
High intraocular pressure doesn't always lead directly to glaucoma. Along with other things, high IOP is considered an important risk factor for the disease.
Open-Angle Glaucoma (OAG)
The normal range of IOP is 12 to 20 mmHG. Pressure higher than this can start to cause OAG and affect the health of the optic nerve. With OAG, eye pressure slowly increases over several years before any optic nerve damage starts to affect your eyesight.
Careful exercise: It's important to stay active, but if you're at an increased risk for high eye pressure, some exercises may increase that risk further. Discuss your exercise plans with your eye doctor to make a plan. Less caffeine: Caffeine could increase eye pressure, so consume it in moderation.
Can high blood pressure (or hypertension) cause glaucoma? The research is not conclusive. Doctors know that increased blood pressure results in increased eye pressure, possibly because high blood pressure increases the amount of fluid the eye produces and/or affects the eye's drainage system.
Intraocular Pressure (Eye Pressure)
The higher the eye pressure, the higher risk of going blind due to glaucoma. On average, let's take a closer look at the relationship between intraocular pressure and going blind from glaucoma: 21-25 mmHg – if left untreated, it takes about 15 years for glaucoma to cause blindness.
What does high eye pressure feel like? High eye pressure, also known as ocular hypertension, often doesn't cause noticeable symptoms. However, some individuals may experience symptoms such as mild eye discomfort, headaches, or changes in vision.
Certain inflammatory eye diseases (like optic neuritis), retinal diseases, or past injuries can also affect the optic nerve's appearance or visual field test results, making them appear similar to glaucoma.
Studies have shown that peak IOP occurs at night or in the early morning hours in two-thirds of glaucoma patients. IOP has been shown to increase by 3 to 4mm Hg when a patient is lying flat face upward.
Raised eye pressure happens as the result of a buildup of fluid that flows throughout the inside of the eye. This fluid, called the aqueous humor, usually drains through a tissue located at the angle where the iris and cornea meet. This tissue is called the trabecular meshwork.
There are usually no early warning symptoms of glaucoma. Over time, you may slowly lose vision, usually starting with your side (peripheral) vision. Because it happens slowly, you may not notice your vision is changing at first. But as glaucoma progresses, you may experience blurry vision or vision loss.
Gradual loss of peripheral vision, often in both eyes: This is typically the earliest sign of glaucoma. You might notice that you can't see objects out of the corner of your eye as well as you used to. Over time, this peripheral vision loss can worsen, leading to tunnel vision.
The first sign of glaucoma is often vision loss -- generally to your peripheral vision, which is also known as side vision or tunnel vision. If you start to notice vision impairment around the edges of your visual field, you should schedule an appointment with your eye doctor immediately.
The good news for patients is that glaucoma is treatable, especially in early stages and if found early, treatment can prevent vision changes. Someone diagnosed with the disease can work with an eye care provider to determine the right plan to control it.
A diagnosis of open-angle glaucoma suspect is established by the presence of a consistently elevated IOP, a suspicious-appearing optic nerve, or an abnormal visual field. Appropriate baseline testing for a glaucoma suspect includes IOP, optic nerve exam, OCT, visual fields, and angle assessment.
Heavy caffeine intake should be advised against due to its transient elevations in IOP, especially in genetically predisposed patients or those with a positive family history of glaucoma. Chronic alcohol consumption can lead to many systemic complications and increased risk of glaucoma.
Nicotinamide/Niacinamide (Vitamin B3)
Nicotinamide (also known as niacinamide) has recently shown significant potential as a novel treatment for glaucoma. It was postulated as a neuroprotective agent for glaucoma in 2017 by Williams and colleagues.
Blood pressure and eye pressure vary independently. Controlling blood pressure does not mean IOP is controlled. But studies have shown that patients with high blood pressure have an increased risk for glaucoma. Very high blood pressure is not good for glaucoma.