Glaucoma is not one disease but a group of eye conditions that damage the optic nerve—the crucial cable connecting your eye to your brain. This damage is almost always caused by elevated pressure inside the eye (intraocular pressure or IOP), though glaucoma can also occur at normal pressure levels. What makes glaucoma uniquely dangerous is that in its most common form, it causes no pain and no noticeable symptoms until significant, irreversible vision loss has already occurred.
Globally, glaucoma affects over 80 million people and is the leading cause of irreversible blindness. In India, it is estimated that over 12 million people have glaucoma—and tragically, more than 90% are unaware of their condition. In Punjab, where diabetes prevalence is high and regular eye check-ups are often neglected, glaucoma represents one of the most serious but preventable causes of permanent blindness.
At Brar Eye Hospital in Bathinda, our glaucoma specialists use state-of-the-art diagnostic equipment and a comprehensive treatment approach to detect glaucoma early, slow its progression, and protect your remaining vision. Early detection is everything with glaucoma—once lost, peripheral vision cannot be restored.
Inside your eye, a fluid called aqueous humour is continuously produced and drains through a drainage angle. This fluid creates and maintains a healthy intraocular pressure (IOP), normally between 10–21 mmHg. In glaucoma, this drainage becomes blocked or insufficient, causing fluid to build up and IOP to rise. Elevated pressure compresses and damages the delicate nerve fibres of the optic nerve.
The optic nerve contains over 1.2 million nerve fibres. As glaucoma progressively destroys these fibres, blind spots develop in your peripheral (side) vision first. Since the brain compensates by "filling in" these blind spots, most patients do not notice vision loss until 40–50% of nerve fibres are already destroyed. By the time central vision is affected, the damage is severe and irreversible.
⚠️ Critical Warning: Peripheral vision loss in glaucoma is permanent. The only way to prevent blindness is early detection through regular eye pressure checks and optic nerve evaluation. Annual eye exams after age 40 are essential—especially if you have a family history of glaucoma.
POAG accounts for over 70% of all glaucoma cases. The drainage angle appears open and normal, but microscopic blockages in the drainage meshwork cause IOP to rise slowly over years. It is completely painless. Peripheral vision is lost so gradually that most patients notice nothing until late stages. POAG is strongly associated with increasing age, family history, and African or South Asian ethnicity. Treatment with eye drops is effective when started early.
This is a medical emergency. The drainage angle suddenly and completely closes, causing IOP to spike dramatically (sometimes above 60 mmHg) within minutes. Symptoms are unmistakable: sudden severe eye pain, blurred vision, halos around lights, nausea, vomiting, and a red eye. Immediate treatment is required within hours to prevent permanent blindness. Risk is higher in people with naturally narrow drainage angles, particularly farsighted individuals.
Optic nerve damage occurs despite normal IOP levels. This form affects people with poor blood flow to the optic nerve, particularly during sleep (nocturnal hypotension). It is more common in Japanese and Korean populations but increasingly recognized in India. NTG requires careful monitoring of blood pressure medications and lifestyle factors in addition to IOP-lowering treatment.
Caused by another eye condition or systemic disease. Common causes include diabetic eye disease, uveitis (eye inflammation), eye trauma, prolonged use of corticosteroid medicines (including common cold/allergy nasal sprays), and advanced cataracts. Treating the underlying cause is essential alongside IOP management.
Present at birth or developing in childhood/adolescence. Congenital glaucoma shows characteristic signs of enlarged, cloudy eyes, watering, and light sensitivity in infants. Early surgical intervention is crucial to preserve vision in developing eyes. Juvenile open-angle glaucoma typically requires surgery as medications are often less effective in young patients.
Understanding your risk factors is the first step toward prevention and early detection:
The frustrating reality of glaucoma is that its most common form—POAG—has no symptoms in early and mid stages. By the time you notice something, significant damage has occurred. However, there are some signs to watch for:
💡 Key Fact: 50% of glaucoma patients in India discover their condition only after suffering significant irreversible vision loss. A comprehensive eye exam with IOP measurement takes under 10 minutes and can save your sight.
Accurate glaucoma diagnosis requires multiple tests—no single test is sufficient. Our comprehensive glaucoma evaluation includes:
For most glaucoma patients, treatment begins with IOP-lowering eye drops. Several classes are available, each working through different mechanisms to either reduce aqueous production or improve drainage. Compliance is critical—drops must be used exactly as prescribed, even when you feel no symptoms. Missing doses allows IOP to fluctuate, accelerating optic nerve damage.
Common classes include: prostaglandin analogues (latanoprost, bimatoprost), beta-blockers (timolol), alpha-agonists (brimonidine), carbonic anhydrase inhibitors (dorzolamide, brinzolamide), and Rho kinase inhibitors—the newest class offering both IOP reduction and potential neuroprotection.
Selective Laser Trabeculoplasty (SLT) uses a low-energy laser to stimulate the trabecular meshwork cells, improving drainage and reducing IOP by 20-30%. SLT is safe, repeatable, painless (performed in the clinic), and effective for open-angle glaucoma. It is increasingly used as a first-line alternative to drops for eligible patients. Results typically last 3-5 years.
Laser Peripheral Iridotomy (LPI) creates a tiny opening in the peripheral iris for angle-closure glaucoma, allowing aqueous to bypass the pupil. This is typically performed preventatively in eyes with narrow angles before acute closure occurs.
When drops and laser cannot adequately control IOP, surgery becomes necessary. Options include:
While glaucoma requires medical treatment, certain lifestyle modifications support management and protect remaining vision:
Punjab's population faces several compounding risk factors: high diabetes prevalence (one of India's highest), widespread steroid use for various conditions, and historically low eye-care-seeking behaviour. This creates a perfect storm for undiagnosed, advanced glaucoma.
We strongly recommend glaucoma screening for all adults over 40 at Brar Eye Hospital. Our comprehensive glaucoma check takes approximately 30-45 minutes and includes all the diagnostic tests needed to confidently assess your risk. For those with a family history or other risk factors, screening should begin at age 35 or earlier.
Remember: the best time to treat glaucoma is before vision loss begins. The second best time is right now—because every day without treatment is a day the optic nerve continues to suffer irreversible damage.
Early detection can save your vision. Book a comprehensive glaucoma check at Brar Eye Hospital, Punjab.
