The Vision Loss You Don’t Notice Until It’s Advanced
Imagine a slow shrinking of your side vision that you never feel or see. No pain, no redness, no blurry patch. You keep reading, driving, and scrolling, because the center of your vision still looks fine.
That is how open-angle glaucoma, the most common form of the disease, often behaves in its early stages. It is also the reason a new glaucoma genetic test is getting attention. Researchers in Australia say it can identify people at up to 10 times the normal risk of developing the condition.
What the Researchers Developed
The test was developed by researchers at QIMR Berghofer and Flinders University, working with international collaborators. According to a statement from QIMR Berghofer released on Friday, November 13, 2026, it is built around a polygenic risk score.
A polygenic risk score combines the effects of millions of genetic variations into one measure of a person’s inherited risk. The team built the new score using genetic data from more than six million people, including almost 300,000 people with glaucoma.
The findings were published in the journal Ophthalmology in 2026. Glaucoma is the leading cause of irreversible blindness worldwide, and open-angle glaucoma is its most common form.
The Numbers Behind the Headline
The figures below come from the research team’s reported results. They apply to the groups described, not to everyone.
10-fold risk versus four-fold risk
In Australians of European ancestry, people in the highest 10% of genetic risk were 10 times more likely to have glaucoma than everyone else. An earlier version of the test, published in 2020, identified about a four-fold increase in risk. That earlier version was based on about 8,000 glaucoma cases, far fewer than the newer dataset.
About 25 years earlier
The study also found that people in the highest 10% of genetic risk developed glaucoma about 25 years earlier, on average, than people in the lowest 10%. That gap matters because glaucoma damage cannot be reversed once it has happened.
Added value beyond eye pressure
Eye pressure is the most commonly assessed glaucoma risk factor. The researchers said the test added substantial predictive value beyond eye pressure measurements. It also identified patients more likely to need intensified treatment and more likely to have affected family members.
Does It Work for Everyone?
The team tested the score in people of European, African, East Asian, South Asian, and Hispanic ancestry. It identified higher-risk groups in all of these populations, but it performed best in people of European ancestry. The researchers linked this to the larger genetic datasets available for European populations.
This is a real limitation to keep in mind. A result that is strong in one group may be less precise in another, and the score alone cannot say who will or will not develop glaucoma.
What It Could Mean for Screening
Professor Stuart MacGregor of QIMR Berghofer, the lead researcher, said the much larger dataset produced a significant leap in predictive accuracy. Professor Jamie Craig of Flinders University said the work opens the door to a more personalized approach to risk analysis. He described this as covering the general population, relatives of patients, and people already showing early signs of the disease, with the aim of getting treatment timing right.
The researchers also suggested the test could help doctors pick out high-risk individuals for closer monitoring and earlier treatment. It might also reduce unnecessary testing for people at lower risk.
They noted that further studies are needed to assess the cost-effectiveness of adding the test to targeted screening programs. The report does not say when, or whether, the test will be offered to the public.
How Glaucoma Is Checked Today
There is no single definitive test for glaucoma. Eye doctors usually combine several checks during a comprehensive exam.
Tonometry measures the pressure inside the eye. Gonioscopy examines the drainage angle where fluid leaves the eye. The optic nerve is also examined for damage, and a visual field test maps your peripheral vision.
A genetic risk score would not replace these checks. Based on the researchers’ description, it would add another layer of information about who may need closer follow-up.
When to See a Doctor
Because early open-angle glaucoma often causes no symptoms, regular eye exams matter more than waiting for warning signs. Age and a family history of glaucoma are well-known risk factors, so people with relatives who have the condition should mention it to their eye doctor.
See an eye doctor promptly if you notice gradual changes in your side vision or difficulty with things you used to see easily.
Seek urgent care if you have sudden severe eye pain, a sudden drop in vision, a severe headache with eye symptoms, nausea or vomiting along with eye pain, or halos around lights. These can signal an acute problem, such as angle-closure glaucoma, which needs immediate attention.
Your Next Step
You cannot order this particular test yet based on what has been reported, but you can act on the same principle: know your risk early. Ask your family whether anyone has had glaucoma, write down what you learn, and bring it to your next comprehensive eye exam.
If you have not had a dilated eye exam in a while, book one. Ask your eye doctor how often you should be checked given your age and family history.
