Can Steroids Cause Glaucoma? Risks And Treatment

Yes, steroids can cause glaucoma. This is not a rare or theoretical concern — it is one of the most well-documented side effects of corticosteroid medications, recognized since the early 1960s. The risk applies to steroids taken as eye drops, pills, injections, skin creams near the eye, and inhaled formulations. The type of glaucoma they cause is called steroid-induced ocular hypertension, and in some people it can progress to permanent optic nerve damage if it goes undetected.

The key word is “some.” Most people who use steroids never develop a problem. But certain individuals — particularly those with a personal or family history of open-angle glaucoma — respond to steroids with a sharp rise in eye pressure. Understanding who is at risk and what to watch for matters because this condition is often silent until damage has already occurred.

How Do Steroids Raise Eye Pressure?

The eye continuously produces a fluid called aqueous humor. This fluid nourishes the front of the eye and drains out through a spongy tissue called the trabecular meshwork, located at the angle where the iris meets the cornea. When production and drainage stay balanced, eye pressure remains in a normal range — typically between 10 and 21 mmHg.

Corticosteroids disrupt this balance. They cause structural and functional changes in the trabecular meshwork that make it harder for fluid to drain. The result is fluid buildup and rising pressure inside the eye. This mechanism is well established in ophthalmology research.

An important distinction: steroids do not cause the most common form of glaucoma by damaging the drain directly at first. Instead, they reduce the outflow facility of the existing drainage system. The eye keeps making fluid at the same rate, but the exit narrows.

The speed and severity of the pressure rise depend on several factors:

• Potency of the steroid. Stronger steroids like dexamethasone and prednisolone tend to raise pressure more than weaker ones.
• Route of administration. Eye drops and ointments deliver the drug directly to the eye and carry the highest risk. Oral and injected steroids also carry risk, though the effect is usually slower.
• Duration of use. The longer you use steroids, the greater the cumulative risk.
• Individual sensitivity. Genetics play a major role in how strongly a person responds.

Who Is Most at Risk?

Steroid responders are people whose eye pressure rises significantly after steroid exposure. Research indicates that about 5% of the general population are high responders, meaning their pressure climbs substantially. Another 30% or so are moderate responders with a milder rise. The remaining majority show little or no change.

Certain groups are more likely to be steroid responders:

• People with primary open-angle glaucoma — a large proportion of these individuals respond to steroids with elevated pressure
• People with a family history of open-angle glaucoma
• People who are nearsighted (myopic)
• People with diabetes
• People with certain connective tissue disorders

Age also matters. Children and older adults appear to be more susceptible to steroid-induced pressure rises than young to middle-aged adults. This is particularly relevant for children treated with steroid eye drops for conditions like allergic conjunctivitis or after eye surgery.

One non-obvious point: the response is not always predictable from the dose. Some people develop dangerously high pressure on low-potency steroids, while others tolerate high-dose treatment without a problem. This is why monitoring — not guessing — is the standard of care.

Which Steroid Forms Carry the Highest Risk?

All routes of corticosteroid delivery can raise eye pressure, but the risk is not equal. The table below ranks common forms by their typical risk profile.

Inhaled steroids deserve a specific mention. Because they are delivered to the lungs, many people assume they cannot affect the eyes. But some studies have found that long-term use of inhaled corticosteroids is associated with a modest increase in the risk of developing open-angle glaucoma or ocular hypertension. The evidence is not uniform — results across studies vary — but the association appears real enough that some clinicians recommend periodic eye pressure checks for people on long-term high-dose inhaled steroids.

Skin creams applied around the eyes are another underrecognized route. The eyelid skin is thin, and steroids can migrate into the eye. There are documented cases of steroid-induced ocular hypertension from facial creams alone.

Can Steroid-Induced Glaucoma Be Treated?

Yes. The first and most effective step is usually to stop the steroid if the medical condition allows it. When the steroid is removed, eye pressure often returns to baseline over days to weeks. But the timeline varies. Some people recover quickly. Others — particularly those who used steroids for months or years — may have persistent elevation that requires ongoing treatment.

If stopping the steroid is not possible because it is treating a serious condition, or if the pressure does not come down on its own, treatment options include:

• Pressure-lowering eye drops. Prostaglandin analogs, beta-blockers, alpha agonists, and carbonic anhydrase inhibitors are commonly used. These reduce fluid production or improve drainage.
• Oral medications. Carbonic anhydrase inhibitors like acetazolamide can lower pressure systemically, though side effects limit long-term use.
• Laser treatment. Selective laser trabeculoplasty (SLT) may help in some cases by improving drainage through the trabecular meshwork.
• Surgery. In severe or refractory cases, trabeculectomy or drainage implant surgery may be necessary.

If the optic nerve has already been damaged, that damage is permanent. Treatment aims to prevent further loss. This is why early detection through regular eye pressure monitoring during steroid use is so important — it is far easier to manage elevated pressure before the optic nerve is affected.

Some clinicians also consider switching to a different steroid or a lower-potency formulation when steroid therapy must continue. This is a clinical judgment call and depends on the condition being treated.

How Is Steroid-Induced Glaucoma Diagnosed?

Diagnosis relies on measuring eye pressure and examining the optic nerve. A routine eye exam with a tonometer takes seconds and gives a pressure reading. If pressure is elevated and the person has a history of steroid use, steroid-induced ocular hypertension is a primary suspect.

Additional testing may include:

• Visual field testing to detect peripheral vision loss from optic nerve damage
• Optical coherence tomography (OCT) to measure the thickness of the retinal nerve fiber layer
• Gonioscopy to examine the drainage angle and rule out angle-closure glaucoma

A key diagnostic challenge: steroid-induced glaucoma and primary open-angle glaucoma can look identical on examination. The distinguishing factor is the history of steroid exposure and whether pressure drops when the steroid is stopped. This is why telling your eye doctor about all steroid use — including creams, inhalers, and joint injections — is essential.

Can Steroid-Induced Glaucoma Be Prevented?

Prevention starts with awareness. If you are prescribed any form of corticosteroid, ask your doctor whether eye pressure monitoring is appropriate. For short courses of oral steroids in people without risk factors, routine monitoring may not be necessary. For long-term use, topical eye steroids, or use in someone with a family history of glaucoma, monitoring is generally recommended.

Practical steps that are supported by clinical practice:

• Use the lowest effective steroid dose for the shortest necessary duration
• Never use someone else’s steroid eye drops or use leftover drops from a previous prescription
• Tell your eye doctor about every steroid you use — nasal sprays, inhalers, creams, injections, and pills
• If you have glaucoma or a family history of it, remind your prescribing doctor before starting any steroid
• Attend follow-up eye exams if your doctor schedules them during steroid treatment

Over-the-counter steroid creams are worth a specific warning. Hydrocortisone cream available without a prescription is mild, but applying it repeatedly to the eyelids or the skin around the eyes without medical supervision is not advisable, especially for people with known glaucoma risk factors.