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Glaucoma
Glaucoma
Early Detection. Expert Precision. Enduring Vision.
The Silent Blinding Disease
Glaucoma is a progressive disease of the optic nerve — the vital structure that carries visual signals from the eye to the brain. It is often called the silent blinding disease because vision loss usually occurs gradually and without early symptoms.
If left untreated, glaucoma can cause permanent and irreversible blindness.
What Is Glaucoma?
The optic nerve functions like a cable made up of thousands of delicate nerve fibers. When these fibers become damaged, blind spots develop in your vision. Over time, this damage can progress and significantly reduce eyesight.
In most cases, this damage is associated with increased pressure inside the eye, known as intraocular pressure (IOP).
How Does Eye Pressure Increase?
The eye continuously produces a clear fluid called aqueous humor. This fluid nourishes the eye and drains through a microscopic drainage system located at the angle between the cornea and iris (called the anterior chamber angle).
When this drainage system does not function efficiently, fluid builds up inside the eye, leading to increased intraocular pressure.
Elevated pressure can damage the optic nerve over time.
However:
- Not everyone with high eye pressure develops glaucoma.
- Some individuals develop optic nerve damage even with normal eye pressure.
This is why comprehensive eye evaluation is essential.
Types of Glaucoma
1. Open-Angle Glaucoma
The most common type. It develops slowly and often without noticeable symptoms in the early stages.
2. Angle-Closure Glaucoma
Also called acute glaucoma. It may present suddenly with pain, redness, headache, and blurred vision. This is a medical emergency.
3. Congenital Glaucoma
Present at birth due to abnormal development of the eye’s drainage system.
4. Secondary Glaucoma
Occurs due to other eye conditions, injury, inflammation, or certain medications.
Who Is at Risk?
You may be at higher risk if you have:
- Age above 40 years
- Family history of glaucoma
- High intraocular pressure
- Thin central cornea
- Diabetes or other systemic diseases
- High spectacle number (especially high myopia)
- History of migraine or unusual headaches
If you fall into any of these categories, regular screening is strongly recommended.
Why Early Detection Is Critical
Glaucoma usually affects peripheral (side) vision first. Since central vision remains normal initially, patients may not notice any problem until significant damage has occurred.
Vision lost due to glaucoma cannot be restored. But early diagnosis and timely treatment can prevent further damage.
A comprehensive eye examination includes:
- Measurement of intraocular pressure
- Optic nerve evaluation
- Visual field testing
- Corneal thickness assessment
- Angle assessment
Treatment of Glaucoma
The primary goal of treatment is:
To lower intraocular pressure and prevent further optic nerve damage.
Treatment is individualized based on disease severity and risk profile.
1. Medicated Eye Drops
Most patients are treated with prescription eye drops that:
- Reduce fluid production
or - Improve drainage of fluid from the eye
Regular and consistent use is crucial.
2. Oral Medications
In some cases, tablets are prescribed temporarily to help control eye pressure.
3. Laser Therapy
Laser procedures help improve fluid drainage and reduce pressure.
4. Surgical Treatment
Surgery is considered when medications and laser therapy do not adequately control the pressure.
Possible Side Effects of Medications
Some patients may experience:
- Eye redness
- Itching or irritation
- Blurred vision
- Dry mouth
- Increased pulse rate
Always inform your doctor about other medications and medical conditions to prevent drug interactions.
Protect Your Vision
Glaucoma often progresses silently. Routine eye examinations are the only way to detect it early.
If you are above 40 years of age or have a family history of glaucoma, schedule regular screening to safeguard your vision.