Primary Open-Angle Glaucoma: Detect Vision Loss Early
Understand the symptoms, causes, and risk factors of primary open-angle glaucoma to help prevent gradual and permanent vision damage.
20
Years
180+
Hospitals
700+
Eye Specialists
3
Crore+ Eyes
20
Years
180+
Hospitals
700+
Eye Specialists
3
Crore+ Eyes
What is Primary Open-Angle Glaucoma?
Primary Open-Angle Glaucoma is a chronic eye disease where the drainage system of the eye becomes inefficient, leading to increased intraocular pressure (IOP). This pressure gradually damages the optic nerve, affecting vision.
The drainage angle remains open, but fluid does not drain properly
Pressure builds up slowly inside the eye
Leads to gradual and permanent vision loss
Primary Open-Angle Glaucoma – Causes, Symptoms & Advanced Treatment
Why is POAG Dangerous?
No pain or early symptoms
Slow progression over years
Vision loss starts from side (peripheral) vision
Damage is irreversible
Most patients are unaware of the condition until advanced stages.
Symptoms of Primary Open-Angle Glaucoma
Early Stage:
No noticeable symptoms
Advanced Stage:
Gradual loss of peripheral vision
Tunnel vision
Blurred vision
Difficulty seeing in low light
Vision loss becomes noticeable only after significant optic nerve damage.
Causes of Primary Open-Angle Glaucoma
The exact cause is not always known, but it is mainly linked to poor drainage of aqueous humor (eye fluid), leading to increased eye pressure.
Common Causes:
Blocked or inefficient drainage system
Increased intraocular pressure
Optic nerve sensitivity
Aging-related changes
Risk Factors
You are at higher risk if you:
Age above 40 years
Family history of glaucoma
Diabetes or hypertension
High eye pressure
Thin cornea
Long-term steroid use
Certain lifestyle and health conditions can further increase risk.
Difference: Open-Angle vs Angle-Closure Glaucoma
| Feature | Open-Angle Glaucoma | Angle-Closure Glaucoma |
|---|---|---|
| Onset | Slow | Sudden |
| Pain | No | Severe |
| Symptoms | Late | Immediate |
| Emergency | No | Yes |
When Should You See a Doctor?
Consult an eye specialist if you have:
Gradual vision loss
Family history of glaucoma
Age above 40
Diabetes or high blood pressure
Early diagnosis is the only way to prevent blindness
Diagnosis of Primary Open-Angle Glaucoma
A comprehensive eye examination includes:
Tonometry – Measures eye pressure
Ophthalmoscopy – Checks optic nerve damage
Visual Field Test – Detects peripheral vision loss
OCT Scan – Measures nerve fiber thickness
Regular screening helps detect glaucoma before symptoms appear.
Treatment Options for POAG
There is no cure, but treatment helps slow progression and protect vision.
Medications
Eye drops to reduce eye pressure
Laser Treatment
Selective Laser Trabeculoplasty (SLT) improves drainage
Surgery
Trabeculectomy
Glaucoma drainage implants
Goal: Lower eye pressure and prevent further optic nerve damage
Primary Open-Angle Glaucoma Treatment Cost in India
Estimated Cost Range:
Eye drops: ₹500 – ₹2,000/month
Laser treatment: ₹10,000 – ₹30,000
Surgery: ₹40,000 – ₹1,50,000
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Recovery & Long-Term Management
Lifelong condition requiring monitoring
Regular eye check-ups essential
Treatment slows progression but cannot restore lost vision
Why Choose ASG Eye Hospital?
Advanced glaucoma diagnostics (OCT, visual field testing)
Experienced glaucoma specialists
Latest laser and surgical treatments
180+ hospitals across India
Personalized patient care
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Clear Answers for Better Vision
What is primary open-angle glaucoma?
It is a chronic eye condition where increased eye pressure damages the optic nerve.
Is POAG curable?
No, but it can be controlled with early treatment.
Does POAG cause pain?
No, it is usually painless in early stages.
How fast does it progress?
It progresses slowly over years.
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