High eye pressure: what it means and what to do

High eye pressure (high intraocular pressure or IOP) doesn’t always hurt, but it can quietly damage the optic nerve and lead to glaucoma. Many people feel fine while pressure climbs, so knowing the basics helps you catch problems early and protect your vision.

How high eye pressure is measured and what the numbers mean

Doctors measure IOP with a tonometer. Normal IOP usually sits between 10 and 21 mmHg. Readings above 21 mmHg raise concern, but the number alone doesn’t tell the whole story. Some people tolerate higher pressure without damage, while others develop glaucoma at lower pressures. That’s why eye doctors look at the optic nerve, visual fields, corneal thickness, and risk factors—not just a single meter number.

Risk factors include age over 60, family history of glaucoma, African or Hispanic background, thin corneas, severe myopia, and long-term steroid use. If you have any of these, regular eye checks matter more.

Treatments and simple steps you can take today

Treatment aims to lower IOP and protect the optic nerve. Most people start with prescription eye drops. Common classes are prostaglandin analogs (work overnight), beta blockers (reduce fluid production), carbonic anhydrase inhibitors, and alpha agonists. Each has pros and cons—your doctor picks what fits your health and lifestyle.

If drops don’t control pressure or cause bad side effects, doctors may use laser therapy like SLT (selective laser trabeculoplasty) to improve drainage. Surgery is an option when other treatments fail; newer techniques called MIGS (minimally invasive glaucoma surgery) have faster recovery and fewer risks than older procedures.

Daily habits can also help. Regular moderate exercise (brisk walking, cycling) tends to lower IOP. Avoid holding your breath during heavy lifting. Cut back on high‑caffeine binging; one strong cup is fine, but many cups can raise IOP temporarily. Don’t start or stop steroid medicines without checking with your doctor—they can spike eye pressure.

Eye drop routine matters. Use drops at the same time each day, tilt your head back, and close your eyes for a minute after applying a drop—this improves absorption and reduces side effects. If you miss a dose, don’t double up; ask your doctor for guidance.

Watch for symptoms that need prompt care: sudden vision loss, severe eye pain, colored halos around lights, or a very red eye. Those can signal acute pressure spikes and need emergency attention.

Regular follow-up is key. Even if your pressure is controlled now, optic nerve checks and visual field tests should continue on a schedule your eye doctor recommends. Early action preserves vision better than waiting for obvious symptoms.

If you’re worried about high eye pressure, book an eye exam and bring a list of medications and family history. Small steps now—testing, consistent drops, and lifestyle tweaks—pay off with long-term vision protection.

The Connection Between High Eye Pressure and Astigmatism

As a blogger, I've recently come across a fascinating topic: the connection between high eye pressure and astigmatism. After some research, I found out that high eye pressure, also known as ocular hypertension, can potentially contribute to the development of astigmatism. Astigmatism is an irregular curvature of the cornea or the lens, causing blurred or distorted vision. While the exact cause is still unclear, it's important to monitor and manage high eye pressure to prevent further complications. Routine eye exams can help detect these issues early, so don't forget to schedule your next appointment!