Glaucoma: The Silent Thief of Sight
Glaucoma is one of the leading causes of irreversible vision loss worldwide — yet many people don’t realise they have it until significant and permanent damage has already occurred. That’s why it’s often called “the silent thief of sight.”
Glaucoma Awareness Week is observed this month and aims to highlight the importance of regular comprehensive eye examinations, early detection, and ongoing eye care to protect sight for life. At our practice, we believe that awareness and early detection are the most powerful tools we have to protect your vision.
What is glaucoma?
Glaucoma is a group of eye conditions that damages the optic nerve. This nerve relays information from the eyes to the brain and enables us to see our world. Nerve damage is most often linked to increased pressure inside the eye, although glaucoma can occur even when eye pressure is within the normal range.
Once vision is lost from glaucoma, it cannot be restored — but with early diagnosis, progression can usually be slowed or prevented.
Why is glaucoma so dangerous?
In its early stages, glaucoma:
- Usually has no symptoms
- Causes no pain
- It affects peripheral (side) vision first, gradually leading to tunnel vision and often going unnoticed as it progresses over time.
Many people only become aware of a problem when their central vision is already affected— at which point permanent damage has occurred.
Who is at risk?
Anyone can develop glaucoma, but your risk is higher if you:
- Are over the age of 40
- Have a family history of glaucoma
- Have diabetes, high blood pressure, or vascular conditions
- Are short-sighted (myopic) or very long-sighted
- Have had eye injuries or long-term steroid use
- Are of African descent, where glaucoma can develop earlier and progress more aggressively
If you fall into any of these groups, regular eye examinations are especially important.
How is glaucoma detected?
Glaucoma cannot be diagnosed from a simple vision test alone. A comprehensive eye examination includes:
- Measurement of eye pressure
- Assessment of the optic nerve
- Visual field testing to check peripheral vision
- Retinal imaging to detect early structural changes
These tests allow us to detect glaucoma before vision is noticeably affected.
Can glaucoma be treated?
While glaucoma cannot be cured, it can be managed. Treatment may include:
- Prescription eye drops
- Laser procedures
- Surgery (in certain cases)
The goal of treatment is to lower eye pressure and protect the optic nerve from further damage.
Why regular eye exams matter
Because glaucoma develops silently, the only way to catch it early is through routine eye examinations — even if your vision feels perfectly fine.
Early detection can mean the difference between:
- Maintaining useful vision for life
- Or experiencing preventable vision loss
Our commitment to your eye health
As an independent optometric practice, we take the time to look beyond just “how well you see” and focus on the long-term health of your eyes. If you haven’t had a comprehensive eye exam recently — or if glaucoma runs in your family — we encourage you to book an appointment.
Your sight is precious. Protect it.
Want to learn more or schedule an eye exam?
Contact us to schedule an appointment at 0219760445 or contact myself at karen@glanzoptometrist.co.za if you have any questions or concerns.
See the world clearly—inside and out. Until next time!
Karen