Glaucoma: Causes, Symptoms, Types, Treatment and Cost in India

Glaucoma is often called the "silent thief of sight" because it usually damages vision slowly and without pain, so many people do not notice anything wrong until a large part of their sight has already been lost. It is the leading cause of irreversible blindness worldwide and affects people of all backgrounds, although it is especially common and often more aggressive in people of African descent. The important message is that glaucoma blindness is largely preventable. Vision that has already been lost cannot be restored, but early diagnosis and consistent treatment with eye drops, laser or surgery can stop or slow further damage in most patients. India's leading eye hospitals have extensive experience treating every type of glaucoma, including complex and advanced cases, with modern technology at affordable prices.

What is Glaucoma?

Glaucoma is a group of eye diseases that damage the optic nerve, the cable that carries visual information from the eye to the brain. In most cases the damage is linked to raised pressure inside the eye (intraocular pressure, or IOP), caused by fluid (aqueous humour) not draining properly. However, glaucoma can also occur with normal eye pressure. As nerve fibres die, blind spots develop, usually starting in the side (peripheral) vision and gradually moving towards the centre.

Main types of glaucoma

• Primary open-angle glaucoma (POAG): the most common type worldwide. The drainage angle looks open, but fluid drains too slowly. It progresses gradually and painlessly.
• Primary angle-closure glaucoma (PACG): the iris blocks the drainage angle. It can be chronic or appear suddenly as an acute attack, which is a medical emergency. Angle closure is relatively more common in people of Asian origin.
• Normal-tension glaucoma: optic nerve damage occurs even though eye pressure is in the normal range.
• Secondary glaucoma: caused by another condition or factor, such as steroid use, eye injury, inflammation (uveitis), advanced cataract, diabetes-related new blood vessels (neovascular glaucoma) or pseudoexfoliation.
• Congenital and childhood glaucoma: present at birth or developing in early childhood, often signalled by large, cloudy eyes, watering and sensitivity to light.

Causes and Risk Factors

Anyone can develop glaucoma, but the risk is higher in people with:

• Age over 40, with risk increasing further after 60.
• African ancestry: people of African descent are more likely to develop open-angle glaucoma, often at a younger age and in a more severe form. Regular eye screening is especially important for patients from Africa.
• Family history: having a parent or sibling with glaucoma significantly increases risk.
• High eye pressure and a thin cornea.
• Diabetes, high blood pressure and very low blood pressure, as well as migraine and sleep apnoea in some cases.
• High myopia (short-sightedness), which increases the risk of open-angle glaucoma, and long-sightedness, which increases the risk of angle-closure glaucoma.
• Long-term use of steroids, including steroid eye drops, inhalers, tablets and creams. In some regions, unsupervised use of steroid eye drops bought over the counter is an important cause of avoidable glaucoma.
• Previous eye injury, surgery or inflammation.

Symptoms of Glaucoma

Open-angle glaucoma usually causes no symptoms in the early stages. As it progresses, people may notice:

• Patchy blind spots in side vision, often in both eyes
• Bumping into objects or difficulty with stairs and kerbs
• Tunnel vision in advanced stages
• Difficulty seeing in dim light or adjusting to darkness

Warning signs of acute angle-closure glaucoma (emergency)

Go to an eye emergency service immediately if you experience a sudden, severe eye pain, a red eye, blurred vision, coloured halos or rainbows around lights, headache, nausea or vomiting. An acute attack can cause permanent blindness within hours or days if not treated urgently. In babies, enlarged or cloudy eyes, constant watering and light sensitivity need urgent review by a paediatric eye specialist.

Diagnosis of Glaucoma

Glaucoma is diagnosed through a comprehensive eye examination. An ophthalmologist typically performs:

• Tonometry to measure eye pressure (Goldmann applanation is the standard method).
• Gonioscopy to examine the drainage angle and determine whether it is open or closed.
• Dilated optic nerve examination to assess the size and shape of the optic disc and look for cupping.
• Optical coherence tomography (OCT) to measure the thickness of the retinal nerve fibre layer and detect damage early.
• Visual field test (perimetry) to map blind spots in peripheral vision.
• Pachymetry to measure corneal thickness, which affects pressure readings and risk.
• Anterior segment OCT or ultrasound biomicroscopy in angle-closure cases.

Because glaucoma is a lifelong condition, these tests are repeated over time to check whether the disease is stable or progressing.

Treatment Options for Glaucoma

The goal of treatment is to lower eye pressure to a "target" level that prevents further optic nerve damage. Treatment depends on the type and stage of glaucoma.

Eye drops

Medicated eye drops are the most common first treatment. They include prostaglandin analogues, beta-blockers, carbonic anhydrase inhibitors, alpha agonists and newer agents such as rho-kinase inhibitors. Many patients need more than one drop. Drops must be used every day, exactly as prescribed, even when the eyes feel fine.

Laser treatment

• Selective laser trabeculoplasty (SLT): a quick outpatient procedure that improves drainage in open-angle glaucoma. It is increasingly used as a first-line treatment and can reduce or eliminate the need for drops for some years.
• Laser peripheral iridotomy (LPI): creates a tiny opening in the iris to relieve or prevent angle closure.
• Cyclophotocoagulation (including micropulse laser): reduces fluid production and is used for advanced or difficult cases.

Surgery

• Trabeculectomy: the traditional "filtration" surgery that creates a new drainage channel. It remains highly effective for lowering pressure.
• Glaucoma drainage devices: tube implants such as the Ahmed or Aurolab valves, used in complex, secondary or previously failed cases.
• Minimally invasive glaucoma surgery (MIGS): tiny stents and micro-incisional procedures, often combined with cataract surgery, offering faster recovery for mild to moderate glaucoma.
• Lens extraction: in angle-closure glaucoma, removing the natural lens (cataract surgery) can open the angle and control pressure.
• Paediatric glaucoma surgery: goniotomy, trabeculotomy and combined procedures for children.

Patients with glaucoma who also have a squint or other eye conditions can have them assessed during the same visit; for example, see our page on squint surgery in India.

Cost of Glaucoma Treatment in India

Glaucoma treatment in leading JCI and NABH accredited eye hospitals in Delhi/NCR is very affordable compared with Western countries. Indicative starting prices are shown below:

Prices are indicative. The final cost depends on the type and stage of glaucoma, the procedure and implant used, whether one or both eyes are treated and the hospital selected. Contact Satyug Healthcare at +91-8860606766 / +91-9910655125 (WhatsApp) for a free medical opinion and cost estimate.

Living with Glaucoma and Prevention

Glaucoma requires lifelong care, but most people who follow their treatment keep useful vision for life. Helpful steps include:

• Use eye drops every day as prescribed, and learn the correct technique. Missing doses is a common reason for disease progression.
• Attend regular follow-up appointments, even after successful surgery, so pressure and vision can be monitored.
• Never use steroid eye drops without an eye doctor's prescription and supervision.
• Manage general health, including diabetes and blood pressure, and stay physically active.
• Protect your eyes from injury during sports and work.
• Screen your family: close relatives of glaucoma patients should have regular eye examinations.

Since early glaucoma has no symptoms, everyone over 40, and anyone of African descent or with a family history, should have a comprehensive eye check every one to two years.

Why Choose India for Glaucoma Treatment?

• Highly experienced glaucoma specialists who manage very large numbers of complex cases, including advanced and childhood glaucoma.
• Modern diagnostic equipment such as OCT, automated perimetry and anterior segment imaging.
• Access to SLT, micropulse laser, MIGS, trabeculectomy and drainage implants, so treatment can be tailored to each patient.
• Costs that are a fraction of those in the USA, UK and Gulf countries, with short waiting times.
• Combined treatment of glaucoma with cataract or cornea problems in the same visit.

Step-by-Step Process to Travel to India for Treatment

1. Share your reports - send your latest reports, scans/CD, angiography or echo films and passport copy to Satyug Healthcare on WhatsApp (+91-8860606766 / +91-9910655125) or email.
2. Free medical opinion & cost estimate - within 24-72 hours we share opinions and written cost estimates from 2-3 JCI/NABH-accredited hospitals and specialists.
3. Choose hospital & doctor - compare doctor experience, hospital, room category and total cost; we help you decide with no extra charge.
4. Visa Invitation Letter (VIL) - the hospital issues a VIL for the patient and up to two attendants; we arrange it within 24-48 hours.
5. Apply for Indian e-Medical Visa - apply online for the e-Medical Visa (patient) and e-Medical Attendant Visa (family) using the VIL; most approvals come in 3-5 working days.
6. Book flights & accommodation - we suggest flights and arrange a guest house, service apartment or hotel near the hospital to suit your budget.
7. Free airport pickup - our representative receives you at the airport and takes you to your hotel or directly to the hospital.
8. Hospital admission & treatment - a dedicated coordinator and language interpreter stay with you for registration, tests, doctor consultations, the procedure and billing.
9. Discharge & follow-up - you receive the discharge summary, prescriptions and fitness-to-fly certificate; follow-up checks are done before you fly.
10. Return home & tele-follow-up - we arrange airport drop and stay connected for online follow-up consultations with your doctor in India.

Frequently Asked Questions

Can glaucoma be cured?

Glaucoma cannot be cured and lost vision cannot be restored, but treatment can control eye pressure and prevent or slow further damage. With early diagnosis and regular treatment, most people keep good vision throughout their lives.

Will I have to use eye drops for the rest of my life?

Many patients need drops for life, but laser treatment such as SLT or surgery can reduce or sometimes eliminate the need for them. Your ophthalmologist will advise which option suits your type and stage of glaucoma.

Is glaucoma surgery painful?

Glaucoma surgery is performed under local anaesthesia, so you will not feel pain during the procedure. Mild discomfort, watering and blurred vision are common for a few days afterwards and are managed with drops and simple painkillers.

How long do I need to stay in India for glaucoma treatment?

Laser procedures usually require 3 to 5 days in India. After trabeculectomy or a valve implant, patients usually stay about 10 to 14 days so the surgeon can check the eye pressure and wound before travel.

Is glaucoma hereditary?

Glaucoma does run in families. If a parent, brother or sister has glaucoma, your own risk is significantly higher, so regular eye examinations are strongly recommended.

Can children get glaucoma?

Yes. Congenital and childhood glaucoma are rare but serious. Signs include large or cloudy eyes, watering and sensitivity to light. Treatment is usually surgical and should be done as early as possible by a paediatric glaucoma specialist.

Can I have cataract surgery if I have glaucoma?

Yes. Cataract surgery is often combined with glaucoma procedures such as MIGS or trabeculectomy, and in angle-closure glaucoma, removing the lens can itself help control eye pressure.

Disclaimer: This article is for general information only and is not a substitute for a consultation with a qualified doctor.