Glaucoma Symptoms and Early Warning Signs

Risk increases notably after age 60. Having a parent or sibling with glaucoma is one of the strongest known risk factors. African ancestry is associated with a higher risk of developing open-angle glaucoma at younger ages. Hispanic and Asian ancestry is linked to a greater risk of angle-closure glaucoma specifically.

Diabetes is associated with increased glaucoma risk. High myopia, which means significant nearsightedness, is linked to a higher likelihood of open-angle glaucoma. Long-term use of corticosteroid medications, whether in eye drops, oral pills, or inhalers, can raise pressure inside the eye and increase risk over time.

Thin corneas (the clear front surface of the eye) have been associated with higher glaucoma risk. Previous eye injuries or surgeries can affect the eye's natural fluid drainage. Certain eye anatomy, such as a naturally narrow drainage angle, raises the risk of angle-closure glaucoma. Elevated eye pressure, even without a current diagnosis, is a significant risk factor on its own.

Yes, and this is an important distinction. Normal-tension glaucoma occurs when the optic nerve is damaged even though eye pressure remains within the standard range. In these cases, the optic nerve may simply be more sensitive to pressure than average. Treatment still focuses on lowering pressure further, since even typical pressure levels may be too high for that individual's nerve. This is one more reason why a full optic nerve evaluation is essential, not just a pressure check.

Not necessarily. Glaucoma often affects both eyes, but the severity and rate of progression can differ between them. One eye may show more optic nerve damage or higher pressure than the other. In some cases, particularly with angle-closure glaucoma, one eye may be more acutely affected at first. Your will evaluate each eye individually during your exam to get an accurate picture of what is happening in both.

Cataracts cause noticeable symptoms such as blurry vision, glare, difficulty driving at night, and colors appearing faded or yellowed. Glaucoma, by contrast, typically causes no symptoms until it has reached an advanced stage. Cataracts affect your overall visual clarity across your entire field of view. Glaucoma tends to create blind spots in peripheral vision that slowly expand inward. Crucially, cataracts can be surgically corrected and vision can be restored. Vision lost to glaucoma is permanent, which is why early detection through regular exams is so important.

Chronic open-angle glaucoma does not produce intermittent symptoms. It progresses silently without causing episodes of pain or visible changes. However, intermittent angle-closure glaucoma can cause recurring bouts of mild eye discomfort, blurred vision, or halos that appear and then resolve on their own, often when lighting is dim and the pupil is larger. These episodes should never be dismissed, even if they clear up quickly. Repeated occurrences of this kind are a warning that should be evaluated by an promptly.

No. The optic nerve does not have pain receptors, so damage occurs entirely without sensation. You cannot feel nerve fibers being lost, and the brain is remarkably good at compensating for gradual side vision loss by filling in the gaps. This means glaucoma can reach an advanced stage before anything seems wrong to the person experiencing it. Only comprehensive testing can reliably detect damage before it becomes severe.

Let your know if any blood relatives have been diagnosed with glaucoma, particularly parents or siblings, since first-degree relatives carry the highest shared risk. If possible, mention the type of glaucoma they had, the age at which they were diagnosed, and whether they experienced vision loss despite treatment. Information about any glaucoma surgeries or long-term eye drop use in your family is also helpful. This history allows your to assess your personal risk level and recommend the most appropriate screening schedule for you.