TL;DR
While many people think it’s only an issue for the elderly, this isn’t always true. The condition can appear at different ages depending on genetics, lifestyle, and eye health.
What is glaucoma?
Glaucoma is a group of eye conditions that damage the optic nerve, usually because of increased pressure within the eye. The optic nerve is vital for sending visual information to your brain, and once damaged, vision loss cannot be reversed.
There are several forms of glaucoma, but the most common is primary open-angle glaucoma, which progresses slowly over time. Another type, angle-closure glaucoma, develops suddenly and can cause severe pain and vision loss if not treated promptly.
Although the risk increases with age, glaucoma can affect anyone. Regular eye checks are key because the early stages rarely cause noticeable symptoms.
When does glaucoma typically start?
Most people associate glaucoma with ageing, and it’s true that those over 40 are at higher risk. Studies show that the chance of developing glaucoma rises steadily as you get older. In the UK, it’s estimated that around 2% of people over 40 and nearly 10% of people over 75 have glaucoma.
That said, glaucoma can begin to develop earlier. Some individuals may see signs in their 30s or even late 20s, particularly if there’s a family history or other risk factors. For others, the condition may not appear until later life.
Age alone doesn’t determine when glaucoma starts, but it often acts as a trigger alongside other contributing factors like genetics or eye structure.
Glaucoma in younger adults
Although less common, glaucoma in younger adults is not unheard of. Juvenile open-angle glaucoma can appear between the ages of 10 and 35, usually due to inherited gene mutations. It behaves similarly to the adult form but may progress more rapidly.
People with high eye pressure from an early age, known as ocular hypertension, are also more likely to develop glaucoma later on. This is why routine eye exams are vital, even if your vision seems fine. Eye pressure can rise quietly without pain or visible symptoms.
For those with a family history, especially if a close relative was diagnosed before 50, it’s worth having an eye test earlier and more often.
Glaucoma in children and infants
In rare cases, glaucoma can even occur at birth or develop within the first few years of life. This is called congenital or infantile glaucoma. It happens when the drainage channels in the eye don’t form properly, leading to fluid buildup and pressure on the optic nerve.
Symptoms in babies can include cloudy eyes, sensitivity to light, and excessive tearing. Early diagnosis and treatment are crucial to prevent lasting damage.
Although congenital glaucoma is rare, affecting around 1 in 10,000 babies in the UK, it highlights that the condition isn’t limited to adults. Regular eye examinations, especially for children with a family history or unusual eye symptoms, help detect problems early and protect long-term vision.
Key risk factors linked to age
While anyone can develop glaucoma, as we mentioned earlier, age only amplifies existing risks. After 40, changes in the eye’s drainage system can make it harder for fluid to flow properly, increasing pressure. Other factors that make glaucoma more likely as you get older include:
- A family history of glaucoma, particularly among parents or siblings
- Long-term corticosteroid use, which can raise eye pressure
- Diabetes, hypertension, or myopia, which can affect eye health
- African, Caribbean, or Asian ancestry, as studies show a higher incidence in these groups
Understanding how these factors interact with age helps you stay proactive about your vision health.
Detecting glaucoma early
The only reliable way to detect glaucoma early is through routine eye examinations. Optometrists use tests to check eye pressure, examine the optic nerve, and assess your visual field. These tests are painless and can catch signs long before vision loss occurs.
In the UK, the NHS offers free eye tests every two years for adults aged 60 and over, and annual free eye tests for people diagnosed with glaucoma or those over 40 with a close relative who has the condition.
Early detection means treatment can begin sooner, usually through eye drops that help lower pressure. In more advanced cases, laser treatment or surgery might be needed.
Remember, the sooner glaucoma is diagnosed, the better the chance of preserving your sight.
Managing glaucoma through the years
Glaucoma can’t be cured, but its progression can be controlled. Treatment focuses on reducing eye pressure and maintaining healthy optic nerve function. People diagnosed early can often lead full lives without significant vision loss.
Maintaining a healthy lifestyle supports eye health too. Regular exercise, a balanced diet rich in antioxidants, and not smoking can all contribute to better outcomes. Managing other health conditions, like diabetes or high blood pressure, also helps reduce further damage.
Because glaucoma is a lifelong condition, keeping up with appointments and following treatment plans consistently makes all the difference.
The key takeaway
Now that you know more about how and when glaucoma develops, you can make informed choices about your eye care. Whether you’re in your 30s or 70s, the key takeaway is the same: don’t wait until symptoms appear. Regular eye checks are your best defence.
Although glaucoma often develops with age, early monitoring can prevent permanent vision loss. If you have a family history or notice subtle changes in your eyesight, get examined promptly.
