Glaucoma is called the Silent Thief of Sight for a reason. By the time most patients notice something is wrong, up to 40% of their optic nerve fibres have already been permanently destroyed. There is no way to reverse that damage. There is, however, every reason to prevent it — if the condition is detected early enough and managed with consistent, expert care.
Complete Eye Care, Gurgaon, is the only fully dedicated Glaucoma Centre in Gurgaon and Haryana. This is not a general eye clinic that treats glaucoma among many other conditions — this is a specialist centre built around comprehensive glaucoma care, equipped with the full range of diagnostic and surgical technology, and led personally by Dr. Parul Sony — MD trained at AIIMS New Delhi and FRCS qualified, with 25+ years of glaucoma surgery and management experience.
Whether you need a first-time glaucoma screening, ongoing pressure monitoring, medical management optimisation, laser treatment, or advanced surgical intervention — everything is available here, under one roof, from a single expert who will know your case at every appointment.
Your eye constantly produces a clear fluid called aqueous humour, which nourishes the front structures of the eye and maintains its shape. This fluid is continuously drained away through a mesh-like drainage canal at the junction of the cornea and iris. In a healthy eye, production and drainage are in perfect balance — maintaining a steady, safe intraocular pressure (IOP) of between 10 and 21 mmHg.
In glaucoma, this drainage system becomes compromised. Fluid builds up, pressure rises, and that elevated pressure — sustained over months and years — quietly compresses and damages the optic nerve. The optic nerve is the cable that transmits everything you see to your brain. When it is damaged, vision is lost. And unlike most parts of the body, optic nerve tissue does not regenerate. Loss of vision from glaucoma is permanent.
What makes glaucoma particularly treacherous is its invisibility in the early stages. The disease begins by destroying peripheral (side) vision — the edges of your visual field that you use for driving, navigating stairs, and noticing movement around you. Because the brain compensates so effectively for these early blind spots, and because the central vision you use for reading and faces remains intact until quite late, most patients genuinely do not notice any change. By the time central vision is affected, the damage is already catastrophic.
Worldwide, glaucoma is the leading cause of irreversible blindness — affecting over 80 million people. In India, it is estimated that approximately 12 million people have glaucoma, and more than half of them remain undiagnosed. In Gurgaon's ageing and increasingly diabetic population, the prevalence is growing steadily. Early detection through regular eye examination — particularly after the age of 40 or if you have risk factors — is the only reliable protection.
Glaucoma is not a single disease — it is a family of conditions, each with its own mechanism, presentation, and management approach. Understanding which type you have is essential, because the treatment approach differs significantly. At Complete Eye Care, Gurgaon, we use gonioscopy and a full diagnostic assessment to precisely classify each patient's glaucoma before deciding on any treatment.
POAG is by far the most prevalent type of glaucoma and the one most people are referring to when they speak of "glaucoma". In POAG, the drainage angle of the eye is anatomically open and unobstructed — the problem lies within the trabecular meshwork itself, which gradually loses its ability to drain fluid efficiently over time. Pressure rises slowly, silently, with no pain and no visible symptoms until significant optic nerve damage has already occurred.
POAG is chronic and progressive — it does not spontaneously improve. Treatment is lifelong and focused on controlling intraocular pressure through a combination of eye drops, laser, or surgery as required. Regular monitoring of optic nerve appearance and visual fields is essential to ensure the treatment is adequate and the disease is not progressing.
Risk profile: predominantly affects people over 40; higher risk with family history, thin corneas, myopia, diabetes, and elevated IOP. In South Asian and African populations, POAG tends to present at a younger age and progress more aggressively.
PACG is particularly prevalent in Indian and East Asian populations — more so than in Western countries — making it highly relevant for patients seeking glaucoma treatment in Gurgaon. In PACG, the drainage angle between the iris and the cornea is anatomically narrow or closed, physically blocking the aqueous outflow pathway.
PACG presents in two ways:
Acute Angle-Closure Attack: A sudden, dramatic rise in intraocular pressure — often triggered by dim lighting (which dilates the pupil and narrows the angle further), certain medications, or emotional stress. Symptoms are severe and unmistakable: intense eye pain, headache, nausea, vomiting, coloured halos around lights, and rapid vision blurring. This is a medical emergency — delay in treatment can cause permanent blindness within hours. If you or someone you know experiences these symptoms, seek emergency eye care immediately.
Chronic Angle-Closure Glaucoma: A slower, insidious form where the angle closes gradually without acute attacks. May be asymptomatic for years. Common in patients with naturally shallow anterior chambers.
Treatment: Laser Peripheral Iridotomy (LPI) creates a microscopic opening in the peripheral iris, allowing fluid to bypass the blocked pupillary pathway and flow freely to the drainage angle. This is typically curative for the underlying mechanism. Ongoing pressure management may still be required.
In NTG, optic nerve damage and visual field loss occur despite intraocular pressure that measures within the statistically normal range (below 21 mmHg). This form is more common than previously recognised and is particularly challenging to manage because pressure-lowering alone — the standard treatment for glaucoma — may be insufficient. Vascular factors (reduced blood flow to the optic nerve) and optic nerve vulnerability are believed to play important roles. Treatment requires aggressive pressure-lowering and, in some cases, neuroprotective strategies.
Secondary Glaucoma
Secondary glaucoma arises as a consequence of another condition. Common causes include: prolonged use of corticosteroid eye drops or oral steroids (steroid-induced glaucoma); trauma to the eye; uveitis (inflammation); pseudoexfoliation syndrome (flaking of fibrous material from the lens capsule); pigment dispersion syndrome; and advanced diabetic eye disease. The treatment addresses both the elevated pressure and the underlying cause where possible.
Congenital / Paediatric Glaucoma
Congenital glaucoma, while rare, is present from birth and requires urgent surgical treatment in infancy to prevent permanent vision loss. Juvenile open-angle glaucoma affects children and young adults and is often genetically determined. At Complete Eye Care, Gurgaon, Dr. Parul Sony manages paediatric glaucoma cases with the same specialist attention as adult glaucoma — no referral elsewhere is needed.
The most important thing to understand about glaucoma symptoms is this: for the most common and dangerous form — Primary Open-Angle Glaucoma — there are no symptoms at all until the disease is already significantly advanced.
No pain. No redness. No blurring of central vision. Nothing.
This is not an exaggeration — it is why glaucoma has destroyed the vision of millions of people who genuinely felt perfectly well right up until their optic nerve was severely damaged. The peripheral vision loss that glaucoma causes develops so gradually, and the brain compensates for it so effectively, that patients can lose 40–50% of their optic nerve fibres before they consciously notice any change in their sight.
Warning signs that may eventually appear in POAG (often late):
• Gradual loss of side (peripheral) vision — noticing a "narrowing" of your visual field
• Difficulty in dim light or at night
• Patchy or hazy areas developing in vision
• Frequent "bumping into" objects at the edges of your visual field
• Tunnel vision — seeing clearly only in the centre with the periphery becoming dark or absent
Symptoms that suggest Acute Angle-Closure Glaucoma (requires IMMEDIATE attention):
• Sudden, severe pain in and around one eye
• Intense headache on the same side as the affected eye
• Nausea and vomiting
• Blurred or foggy vision that comes on suddenly
• Seeing coloured halos or rainbow rings around lights — particularly at night
• Eye appears red; pupil may be mid-dilated and unresponsive to light
• Feeling of pressure or heaviness in the eye
Acute angle-closure is a medical emergency. The optic nerve can suffer irreversible damage within hours of an acute attack. If you experience any combination of the above symptoms, do not wait — call Complete Eye Care immediately at +91-9818196263 or proceed to the nearest emergency eye unit.
Symptoms in other types:
• Normal-tension glaucoma: often entirely asymptomatic until late; discovered only on routine testing
• Secondary glaucoma: may present with redness, pain, or reduced vision depending on the underlying cause
• Congenital glaucoma in infants: large, cloudy eyes; excessive tearing; sensitivity to light
The bottom line: do not rely on symptoms to tell you whether you have glaucoma. Regular eye examinations with measurement of intraocular pressure, optic nerve evaluation, and visual field testing are the only reliable protection.
Glaucoma can affect anyone at any age, but certain groups carry a significantly higher risk. Understanding your risk profile is the first step toward protecting your vision through timely screening.
You are at elevated risk if:
Age over 40: The risk of glaucoma increases with every decade of life. After 60, the risk is six times higher than for someone in their twenties. However, glaucoma is not exclusively a disease of the elderly — juvenile and adult-onset forms affect younger patients too, and these often progress faster.
Family history: Having a first-degree relative (parent or sibling) diagnosed with glaucoma increases your own lifetime risk by four to nine times. The genetic predisposition is strongest for primary open-angle glaucoma. We recommend annual glaucoma screening for all adult first-degree relatives of diagnosed patients.
Elevated intraocular pressure (ocular hypertension): A consistently measured IOP above 21 mmHg is the single most modifiable risk factor for glaucoma. Not everyone with high IOP will develop glaucoma, but the higher and more sustained the pressure, the greater the risk.
Indian / South Asian ethnicity: Primary angle-closure glaucoma is disproportionately common in the Indian population compared to Western populations. Normal-tension glaucoma and juvenile open-angle glaucoma also have higher prevalence in South Asians.
Thin central corneal thickness: A cornea thinner than 555 microns is a strong independent risk factor for glaucoma progression. Corneal thickness is measured with pachymetry as part of a comprehensive glaucoma assessment.
High myopia (severe shortsightedness): People with a spectacle power of -6D or more have a significantly higher lifetime risk of developing glaucoma. The elongated eye shape associated with high myopia stretches and thins the optic nerve tissue, making it more vulnerable to pressure-induced damage.
Diabetes and hypertension: Both conditions affect blood flow to the optic nerve and are associated with increased glaucoma risk. If you have been diagnosed with either condition, annual glaucoma screening is strongly recommended.
Prolonged steroid use: Corticosteroids — whether as eye drops, inhaled steroids (for asthma), oral tablets, or even skin creams applied near the eyes — can raise intraocular pressure in susceptible individuals. Steroid-induced glaucoma can develop silently after just a few months of use. If you are on long-term steroid therapy of any kind, have your IOP checked regularly.
Previous eye injury: Trauma to the eye can damage the drainage structures and lead to secondary glaucoma — sometimes years after the original injury.
Accurate glaucoma diagnosis requires a complete battery of investigations — no single test is sufficient on its own. At Complete Eye Care, Gurgaon, we have invested in the full spectrum of glaucoma diagnostic technology so that every case is assessed with the same precision and depth that would be expected at a tertiary eye hospital. Here is what every new glaucoma patient at our centre receives as part of their initial assessment:
Tonometry measures the pressure inside the eye — the intraocular pressure (IOP). This is the most fundamental glaucoma screening test. At Complete Eye Care, we use Goldmann Applanation Tonometry, the gold standard method that gently touches the anaesthetised corneal surface to measure pressure with exceptional accuracy.
A single elevated reading does not confirm glaucoma — IOP naturally fluctuates during the day and can be influenced by factors including corneal thickness, hydration, and time of day. For patients with suspected or established glaucoma, we often measure pressure at different times of day (diurnal curve) to understand the true pressure range. If elevated pressure is found, gonioscopy and optic nerve evaluation are performed to determine whether glaucoma is present.
Ophthalmoscopy allows Dr. Sony to directly examine the optic nerve head — the point where the optic nerve enters the eye from the brain. In glaucoma, characteristic changes occur in the optic nerve head: the central cup (a normal depression) enlarges relative to the disc (increased cup-to-disc ratio), the rim tissue between the cup and disc becomes notched or thinned, and the nerve fibre layer develops characteristic defects.
These changes can sometimes be detected before any visual field loss occurs, which is why optic nerve assessment is an essential part of every glaucoma check-up at Complete Eye Care, Gurgaon. Serial disc photographs allow us to compare the nerve appearance over time and detect subtle progressive changes.
Ophthalmoscopy allows Dr. Sony to directly examine the optic nerve head — the point where the optic nerve enters the eye from the brain. In glaucoma, characteristic changes occur in the optic nerve head: the central cup (a normal depression) enlarges relative to the disc (increased cup-to-disc ratio), the rim tissue between the cup and disc becomes notched or thinned, and the nerve fibre layer develops characteristic defects.
These changes can sometimes be detected before any visual field loss occurs, which is why optic nerve assessment is an essential part of every glaucoma check-up at Complete Eye Care, Gurgaon. Serial disc photographs allow us to compare the nerve appearance over time and detect subtle progressive changes.
Automated perimetry (also called a visual field test or Humphrey Visual Field test) measures your complete field of vision — central, peripheral, and all quadrants. The patient fixates on a central point while lights of varying intensity are presented at multiple locations across the visual field. You press a button each time you see a light. The computer maps your responses to create a detailed topographic map of your visual field.
Glaucoma characteristically damages peripheral vision in specific, recognisable patterns — arcuate defects, nasal steps, and altitudinal defects. Serial visual field tests over time are essential to monitor whether glaucoma is progressing or being adequately controlled by treatment. At Complete Eye Care, Gurgaon, we use automated perimetry for all glaucoma patients and maintain serial test records to track changes over years.
Gonioscopy is an essential test that directly visualises the drainage angle of the eye — the junction between the iris and the cornea where aqueous humour exits. A specially designed mirrored contact lens is placed on the numbed eye, allowing Dr. Sony to examine the angle structures under magnification.
Gonioscopy is the only reliable way to determine whether a patient has open-angle glaucoma or angle-closure glaucoma — a distinction that fundamentally changes the treatment approach. It also helps identify the cause of secondary glaucoma (such as peripheral anterior synechiae, pseudoexfoliative material, or pigment deposits on the trabecular meshwork). Every new glaucoma patient at Complete Eye Care, Gurgaon, undergoes gonioscopy as part of their initial assessment.
OCT is one of the most powerful advances in modern glaucoma management. Using near-infrared light, the OCT machine generates a precise cross-sectional map of the retinal nerve fibre layer (RNFL) — the layer of optic nerve axons that surrounds the optic disc. Glaucoma damages these fibres in measurable, characteristic ways that the OCT can detect with a sensitivity that surpasses standard visual field testing.
Crucially, RNFL thinning on OCT often becomes detectable before any visual field defects appear. This means OCT can identify pre-perimetric glaucoma — damage that has begun but has not yet affected the functional vision test. Serial OCT measurements over months and years allow us to track the rate of nerve fibre loss, verify whether treatment is effective, and detect progression that may not yet be visible on visual field testing.
At Complete Eye Care, Gurgaon, OCT is available on-site and is an integral part of every glaucoma monitoring visit.
Pachymetry measures the thickness of the central cornea using ultrasound or optical technology. This measurement is essential in glaucoma management for two distinct reasons.
First, corneal thickness affects the accuracy of IOP measurements. Tonometry measures the pressure required to flatten the cornea — a thicker cornea resists flattening and produces artificially high IOP readings, while a thinner cornea flattens too easily and produces artificially low readings. Pachymetry allows Dr. Sony to apply a correction factor to IOP measurements, obtaining the patient's true intraocular pressure.
Second, corneal thickness is an independent risk factor for glaucoma progression. The Ocular Hypertension Treatment Study (OHTS) — one of the landmark glaucoma clinical trials — demonstrated that patients with central corneal thickness below 555 microns have a significantly elevated risk of developing glaucoma and of having faster progression. Knowing a patient's corneal thickness therefore directly influences how aggressively their IOP needs to be managed.
The goal of every glaucoma treatment — whether medical, laser, or surgical — is the same: to lower intraocular pressure to a level that prevents further damage to the optic nerve and preserves the remaining vision. There is no treatment that restores vision already lost. There is, however, every treatment available to ensure no further vision is lost.
At Complete Eye Care, Gurgaon's only dedicated Glaucoma Centre, we offer the complete spectrum of glaucoma treatment. Dr. Parul Sony will recommend the appropriate approach based on your type of glaucoma, current pressure levels, optic nerve status, visual field findings, and lifestyle factors. The goal is always the minimum intervention required to achieve the target pressure — progressing to the next level only if needed.
Glaucoma is a lifelong condition — which means your relationship with your glaucoma specialist is also lifelong. You need a doctor who will be with you at every check-up over the next twenty or thirty years, who knows your optic nerve and visual fields as intimately as you know your own face, and who will catch the first sign of progression before it becomes irreversible damage.
Dr. Parul Sony is the Medical Director and founder of Complete Eye Care, Gurgaon — and glaucoma is one of her subspecialty areas of deepest expertise. She completed her MD (Ophthalmology) residency at the Rajendra Prasad Centre for Ophthalmic Sciences at AIIMS New Delhi, where she received training in the full spectrum of glaucoma management — from the common primary open-angle glaucoma to complex paediatric, neovascular, and post-traumatic secondary glaucomas. She subsequently obtained the FRCS from the Royal Colleges of Surgeons, UK.
Over 25+ years of practice, Dr. Sony has built one of Gurgaon's most comprehensive glaucoma programmes, treating patients from across Haryana and Delhi NCR who have been told their pressure is not adequately controlled, or who have failed treatment at other clinics.
Credentials & Experience:
✅ MD (Ophthalmology) — Rajendra Prasad Centre, AIIMS New Delhi
✅ FRCS — Fellow of the Royal Colleges of Surgeons, UK
✅ 25+ years of glaucoma specialist experience
✅ Expert in all laser treatments: LPI, SLT, cyclophotocoagulation
✅ Expert in all surgical procedures: trabeculectomy, MIGS, drainage implants
✅ Full diagnostic suite on-site: Goldmann tonometry, OCT, HVF perimetry, gonioscopy, pachymetry
✅ Gurgaon's only fully dedicated Glaucoma Centre — not a general eye clinic
✅ 29,000+ patients treated | 4.8-star Google rating
Dr. Sony's approach to glaucoma management is grounded in two principles: thoroughness and consistency. Every patient is examined with the same level of detail at every visit. Serial records are meticulously maintained so that the slightest change in optic nerve appearance, RNFL thickness, or visual field is detected and acted upon — not missed.
Most eye clinics in Gurgaon treat glaucoma as one service among many — alongside LASIK, cataract, retina, and every other eye condition. At Complete Eye Care, glaucoma is not one service among many. It is the central pillar around which this clinic was built.
This is what makes Complete Eye Care genuinely different:
1. The Only Fully Dedicated Glaucoma Centre in Gurgaon
No other eye clinic in Gurgaon or Haryana has invested in the complete range of glaucoma-specific diagnostic and treatment infrastructure and made it the primary clinical focus of the practice. At Complete Eye Care, every piece of equipment, every clinical protocol, and every consultation appointment is oriented around comprehensive glaucoma management. This is not a claim — it is the founding principle of this clinic.
2. Every Investigation Under One Roof
Goldmann applanation tonometry, Humphrey visual field perimetry, OCT nerve fibre analysis, gonioscopy, pachymetry, disc photography, and more — all available at a single clinic, on the day of your appointment, without being sent to separate diagnostic centres. For a condition that requires serial testing over years, this consistency in the same equipment matters enormously for accurate comparison.
3. An AIIMS-Trained Glaucoma Surgeon Who Sees You at Every Visit
At large hospitals, you may see a different registrar at each glaucoma appointment. At Complete Eye Care, Dr. Parul Sony sees every glaucoma patient at every visit — personally reviewing the OCT, personally reading the visual field, personally examining the optic nerve. For a disease where subtle progressive changes must be caught early, continuity of care is not a luxury — it is a clinical necessity.
4. Gurgaon's Most Comprehensive Glaucoma Assessment
Our new patient glaucoma assessment is designed to leave no question unanswered: type, stage, risk factors, target pressure, and a clearly explained treatment plan. Many patients arrive at Complete Eye Care having been diagnosed elsewhere with "high pressure" or "borderline glaucoma" without ever receiving a full explanation of what their diagnosis means for their vision and their life. We change that at the first appointment.
5. Lifelong Partnership in Vision Preservation
Glaucoma is a decades-long commitment between patient and doctor. We approach every glaucoma patient as a long-term partner in preserving their vision — not as a one-time appointment. Our records, monitoring schedule, and treatment planning are built for the long haul.
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