Glaucoma is often called the “silent thief of sight” because it can cause gradual vision loss without noticeable symptoms in its early stages. As one of the leading causes of irreversible blindness worldwide, early detection is crucial. By understanding the signs of glaucoma and recognising subtle vision changes, you can take proactive steps to protect your sight.
At Vision Clinic Sydney, we provide thorough eye examinations using state-of-the-art diagnostic tools to detect glaucoma as early as possible. This article explores what glaucoma is, what causes it, and how to spot early symptoms before significant vision damage occurs.
What is Glaucoma?
Glaucoma refers to a group of eye conditions that damage the optic nerve, which is essential for transmitting visual signals from the eye to the brain. This damage is often caused by mechanisms that are too complex to elaborate here. However, a modifiable risk factor is intraocular pressure (IOP), although glaucoma can occur with elevated or even normal intraocular pressure levels.
There are different types of glaucoma, but the two most common are:
- Primary Open-Angle Glaucoma (the most common form, often asymptomatic in early stages)
- Narrow Angle Glaucoma (less common but can develop suddenly and require urgent care)
What Is Glaucoma?
There are multiple different types of glaucoma. The final common pathway is damage to the optic nerve over time.
Risk factors include:
- Age (especially over 60)
- Family history of glaucoma
- Diabetes
- Prolonged corticosteroid use
- Thin corneas or high eye pressure
- Previous eye injuries
- Vascular risk factors, such as hypertension, high cholesterol, and smoking
Regular screenings at Vision Clinic Sydney are important for patients with any of these risk factors.
Glaucoma Symptoms: Early Signs to Watch For
1. No Obvious Symptoms at First
One of the biggest challenges is that glaucoma symptoms early on may not be noticeable. Primary open-angle glaucoma progresses slowly and painlessly, often going undetected until vision loss becomes more advanced.
2. Gradual Loss of Peripheral Vision
The most common early sign of glaucoma is the loss of peripheral (side) vision. This might feel like looking through a narrow tunnel, but it often goes unnoticed in everyday life.
3. Blurred or Hazy Vision
Occasionally, people report blurry or hazy vision, particularly in low light. This can be confused with other eye conditions, but it’s worth investigating if persistent.
4. Eye Pain or Pressure
Some forms of glaucoma, particularly angle-closure glaucoma, can present suddenly with eye pain, redness, and even headache and nausea. This is a medical emergency and requires immediate attention.
5. Halos Around Lights
Seeing rainbow-coloured halos around lights—especially at night—can be an early warning sign of increased intraocular pressure.
6. Difficulty Adapting to Darkness
Difficulty adjusting from light to dark environments may be a subtle sign of glaucoma progression.
What Does Glaucoma Feel Like?
People often ask, what does glaucoma feel like? In many cases, it feels like nothing at all—which is why it’s so dangerous. However, if symptoms do occur, they may include:
- Eye pain or discomfort
- Headaches
- Blurred or narrowed vision
If you’re experiencing any of these symptoms, a comprehensive eye examination is recommended.
How is Glaucoma Treated?
Once diagnosed, glaucoma cannot be cured, but its progression can be managed to prevent vision loss. The goal of treatment is to lower intraocular pressure and protect the optic nerve.
At Vision Clinic Sydney, glaucoma management may include:
- Prescription eye drops to reduce fluid production or improve drainage
- Oral medications
- Laser treatments like Selective Laser Trabeculoplasty (SLT)
- Surgical procedures such as Microincisional Glaucoma Surgery (MIGS) or trabeculectomy, depending on the severity
Each treatment plan is customised based on the type of glaucoma and the patient’s overall eye health.
When should you see an Eye Specialist?
Because early signs of glaucoma can be subtle or completely absent, regular eye exams are key. Adults over 40 and individuals with risk factors should have routine checks even in the absence of symptoms.
At Vision Clinic Sydney, we combine clinical expertise with advanced imaging technology to detect and manage glaucoma early, protecting your vision for the future.
How To Book an Assessment
To request an appointment or if you have an enquiry, please contact us via the following ways:
Call or message us: +612 9222 9188
Email us: reception@visionclinicsydney.com.au
Book online via our website.
FAQs
What does glaucoma vision look like?
Glaucoma typically begins with the gradual loss of peripheral vision while central vision remains unaffected. Over time, this can progress to tunnel vision, making it feel as though you’re looking through a narrow tube. In advanced stages, blind spots may appear, impacting tasks like driving or navigating crowded spaces. Early detection is key to preserving sight.
Does glaucoma affect both eyes?
Yes, glaucoma usually affects both eyes, although not always equally. It may progress faster in one eye, making it harder to notice changes right away. Because one eye can compensate for the other, many people remain unaware of the condition until noticeable vision loss occurs. Vision Clinic Sydney uses advanced imaging and visual field testing to detect these early changes.
What are the symptoms of glaucoma?
Early glaucoma symptoms are often subtle or absent. As the condition progresses, you may notice peripheral vision loss, halos around lights, eye pain, or blurred vision. Sudden onset symptoms, such as intense eye pain or nausea, may indicate angle-closure glaucoma, which requires immediate attention.
What happens in glaucoma?
Damage to the optic nerve, leading to progressive vision loss. Risk factors include age, family history, eye trauma, and chronic medical conditions like diabetes.
How can glaucoma be managed once diagnosed?
While glaucoma cannot be cured, it can be effectively managed to slow or prevent further vision loss. Treatments may include prescription eye drops, oral medications, laser therapy, or surgical procedures to reduce IOP. At Vision Clinic Sydney, we tailor treatment plans to your specific diagnosis and long-term vision needs.
General Information Disclaimer: The content provided here is for informational purposes only and is not intended as medical advice, diagnosis, or treatment. Always seek the advice of your health professional with any questions you may have regarding a medical condition. The information on this site is general in nature and may not reflect current medical developments or research. Your reliance on any information provided by this site is solely at your own risk.
