Glaucoma Diagnosis and Treatment
Glaucoma refers to a group of eye conditions causing damage to the optic nerve, transmitting visual information from the retina to the brain. This damage is often linked to increased pressure inside the eye (intraocular pressure), but glaucoma can also occur with normal eye pressure.
Glaucoma develops slowly and painlessly, so many people don’t notice symptoms until later. Regular eye tests are essential for early detection.
What Happens in Glaucoma
Inside the eye, a fluid called aqueous humour is continuously produced and drained through tiny channels. If these channels become blocked or fluid drains too slowly, pressure inside the eye can rise. Elevated pressure can damage the optic nerve, which is vital for clear vision.
In certain cases, such as normal tension glaucoma, optic nerve damage can occur even if eye pressure is normal, possibly due to reduced blood flow to the nerve.
Types of Glaucoma
Glaucoma is a group of related conditions. The main types include:
- Primary Open-Angle Glaucoma (POAG): The most common type, where fluid drains too slowly through the eye’s drainage angle. It develops gradually, often without noticeable symptoms in the early stages.
- Angle-Closure Glaucoma (Acute Angle-Closure Glaucoma): Occurs when the drainage angle between the iris and cornea suddenly becomes blocked, leading to a rapid rise in eye pressure. This is a medical emergency that requires immediate treatment.
- Normal Tension Glaucoma: Damage to the optic nerve occurs despite normal eye pressure levels.
- Secondary Glaucoma: Develops due to another eye condition, injury, or medication.
- Congenital (Childhood) Glaucoma: A rare type present at birth, often caused by abnormal development of the eye’s drainage system.
Symptoms of Glaucoma
Symptoms vary depending on the type and stage. Open-angle glaucoma often has no early symptoms, with peripheral vision loss developing unnoticed over time.
More advanced or acute glaucoma may cause:
- Blurred or hazy vision
- Eye pain or intense pressure
- Halos around lights
- Headaches or nausea
- Sudden loss of vision (in acute cases)
If you experience sudden vision loss, severe eye pain, or blurred vision, seek immediate medical attention.
How Glaucoma Is Diagnosed
At OPTIX Opticians, every routine eye test includes checks that can help detect early signs of glaucoma. Our optometrists can identify changes that may indicate increased eye pressure or optic nerve damage.
Examinations may include:
- Eye Pressure Measurement (Tonometry): To check the pressure inside your eyes.
- Optic Nerve Evaluation: Using retinal imaging or other methods to detect any damage.
- Visual Field Test: To assess peripheral vision, which can be affected in early stages.
If any signs of glaucoma are detected, we refer patients to an ophthalmologist or specialist eye doctor for further assessment and management.
Glaucoma Treatment Options
Glaucoma cannot be completely cured, but early treatment can prevent further vision loss. The goal is to lower eye pressure and protect the optic nerve.
Common treatment options include:
- Prescription Eye Drops: Usually the first line of treatment. These drops lower eye pressure by improving fluid drainage or reducing fluid production.
- Laser Treatment: Procedures such as laser trabeculoplasty (for open-angle glaucoma) or laser iridotomy (for angle-closure glaucoma) help fluid drain more effectively.
- Glaucoma Surgery: In advanced cases, surgery may create new drainage pathways to lower eye pressure.
Your ophthalmologist will determine the most appropriate treatment based on glaucoma type and severity.
The Importance of Routine Eye Tests
Since glaucoma often develops without noticeable symptoms, regular eye tests are essential. Early detection is key to maintaining long-term eye health, even before symptoms appear, and allows for timely intervention, helping to preserve vision.
At OPTIX Opticians, we recommend:
- Routine eye tests every two years for most adults.
- Annual eye tests if you are over 40, have a family history of glaucoma, or have risk factors such as diabetes or high blood pressure.
Living with Glaucoma and Prevention
While glaucoma cannot always be prevented, maintaining a healthy lifestyle and consistent eye care can help reduce risk. Helpful steps include:
- Attending all routine eye tests
- Using prescribed eye drops consistently (if diagnosed)
- Protecting your eyes from injury
- Staying active and maintaining general health
If diagnosed with glaucoma, regular monitoring and specialist care are essential for effective management.
Contact OPTIX Opticians
If you’re due for your routine eye test or have concerns about your eye health, the friendly team at OPTIX Opticians is here to help. Our comprehensive eye examinations are designed to detect early signs of conditions like glaucoma, helping you take proactive steps to protect your vision.
Book your appointment today and take an important step toward maintaining lifelong eye health.
Frequently Asked Questions
Q: Can glaucoma be prevented?
A: Glaucoma cannot always be prevented, but early diagnosis and proper management can prevent your vision deteriorating.
Q: How often should I be tested for glaucoma?
A: Adults should have an eye test every two years, or more frequently if they have higher risk factors like age, family history, or certain health conditions.
Q: Is laser treatment painful?
A: No. Laser treatment for glaucoma is quick, safe, and performed under local anaesthesia. Most patients experience little to no discomfort.
Q: What happens if glaucoma is left untreated?
A: Untreated glaucoma can permanently damage the optic nerve, causing irreversible vision loss.
Q: Can glaucoma return after surgery?
A: In some cases, eye pressure can rise again over time, so regular monitoring is essential even after surgery.
