Affinity Health, a leading provider of high-quality health cover, is using World Glaucoma Week (9–15 March) to raise awareness about the importance of regular eye tests in detecting glaucoma early, before irreversible vision loss occurs.
Glaucoma is one of the leading causes of irreversible blindness worldwide, yet many people are unaware that they have it until damage is already advanced. Often called the “silent thief of sight”, glaucoma can develop slowly and without obvious symptoms, which makes routine eye examinations essential for early detection.
Global health authorities estimate that millions of people are living with glaucoma, and a significant number remain undiagnosed. While vision lost to glaucoma cannot be restored, early diagnosis and treatment can slow progression and help preserve remaining sight.
What Is Glaucoma?
Glaucoma refers to a group of eye conditions that damage the optic nerve, which carries visual information from the eye to the brain. This damage is most often linked to increased pressure inside the eye, although glaucoma can also occur when eye pressure falls within a normal range.
The most common form is open-angle glaucoma, which develops gradually and usually without pain or noticeable vision changes in the early stages.
Why Glaucoma Often Goes Unnoticed
One of the main challenges with glaucoma is that early symptoms are rare. Vision loss typically begins at the edges of the visual field and progresses slowly towards the centre. Because this change happens gradually, many people adapt without realising their vision is deteriorating.
By the time symptoms such as blurred vision, difficulty seeing in low light, or tunnel vision become noticeable, permanent damage may already have occurred.
How Regular Eye Tests Help Detect Glaucoma Early
A comprehensive eye test does far more than check whether glasses are needed. It can also identify early signs of glaucoma long before vision is affected.
Eye examinations may include:
- Measuring eye pressure.
- Examining the optic nerve.
- Assessing peripheral (side) vision.
- Checking corneal thickness.
Together, these tests help eye care professionals detect glaucoma early and begin treatment before serious vision loss develops.
Who Is Most at Risk?
Although glaucoma can affect anyone, certain factors increase the risk. These include:
- Being over the age of 40.
- A family history of glaucoma.
- Diabetes or high blood pressure.
- Long-term use of corticosteroid medication.
- Previous eye injuries.
Importantly, glaucoma can develop even in individuals without known risk factors, which is why regular screening is recommended for adults.
Why Early Detection Is So Important
Detecting glaucoma early allows treatment to start before vision is permanently damaged. Treatment may involve prescription eye drops, medication, laser therapy, or surgery to reduce eye pressure and protect the optic nerve.
When glaucoma is diagnosed early, many people can maintain their vision and continue daily activities with minimal disruption. Late diagnosis, however, significantly increases the risk of severe vision impairment or blindness.
The Impact on Daily Life
Vision loss affects more than eyesight alone; it can also reduce independence, impair mobility, and undermine work, driving, and daily confidence. Undiagnosed glaucoma may gradually limit quality of life, often without a clear explanation for why everyday tasks become more difficult.
How Often Should Eye Tests Be Done?
Most eye care professionals recommend comprehensive eye tests every one to two years, depending on age, risk factors, and existing eye conditions. People at higher risk of glaucoma may require more frequent testing.
Regular eye exams should be considered a routine part of healthcare, on par with blood pressure checks or dental visits.
Conclusion
World Glaucoma Week reminds us that protecting vision starts with prevention and regular eye care, even before symptoms appear. Affinity Health supports this proactive approach by offering optometry cover under its Day-to-Day Plan, which includes one eye test every 24 months and one set of standard frames and lenses. This service is provided through Specsavers, Affinity Health’s contracted optometry partner.
