S1 Hero — IOP Willowbrook
Glaucoma Screening & IOP Testing

Intraocular Pressure Test
in Willowbrook,
Houston TX

Your eye constantly produces fluid that must drain at the right rate to keep pressure stable. When drainage slows, intraocular pressure rises quietly — no pain, no warning. Over time, elevated IOP damages your optic nerve and causes permanent vision loss. At Quality Eye Care in Willowbrook, Dr. Sharon Mathukutty provides advanced glaucoma testing and eye pressure evaluation to catch problems early, before damage begins.

Book Your Eye Pressure Test (281) 477-7811
  • The Woodlands / Spring
  • Willowbrook / Houston
  • Conroe, TX
S2 Trust Bar — IOP Willowbrook
4.98 Stars on Google 18,000+ patient visits
Board Certified Optometrists Experienced clinical care team
Most Insurance Accepted VSP, EyeMed & more
New Patients Welcome All ages, all prescriptions
Same-Day Appointments Available at all 3 locations
S3 What It Measures — IOP Willowbrook
21
mmHg
The upper limit of normal intraocular pressure.
Readings above this signal elevated IOP.
No Pain, No Symptoms Elevated IOP causes no discomfort — you cannot feel it rising
Silent Optic Nerve Damage Damage to the optic nerve is permanent and irreversible
Early Detection Works Caught early, glaucoma progression can be slowed significantly
Why Get Tested & Why It Matters

What an Eye Pressure Test Actually Measures

Your eyes constantly produce a fluid called aqueous humor. As that fluid flows in, the same amount should drain out through a tiny channel near the iris. This balance keeps the pressure inside your eye — called intraocular pressure, or IOP — stable.

When that drainage slows or gets blocked, fluid builds up. Pressure rises quietly inside the eye. Over time, elevated IOP restricts blood flow to the optic nerve — the cable connecting your eye to your brain — and causes permanent damage. This is how glaucoma develops, often with no pain and no early warning signs at all.

An eye pressure test measures the fluid pressure inside your eye, giving Dr. Mathukutty a direct window into your glaucoma risk — before any vision loss has occurred.
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S4 How It Works — IOP Willowbrook
How It Works

How Eye Pressure Is Measured

The entire process takes less than a minute and causes no discomfort.

Numbing Eye Drops

Eye drops are applied to numb the surface of your eye so you feel nothing during the test.

Blue Light Device

A small blue-light instrument gently touches the front surface of your eye for a fraction of a second.

Pressure Reading

The device records the exact intraocular pressure in millimeters of mercury (mmHg).

Both Eyes Tested

The process is repeated for your other eye. Each measurement takes only a few seconds.

Instant Results

Dr. Mathukutty reviews your IOP readings and explains what they mean for your eye health.

No air puff. No discomfort. The modern tonometry method we use at our Willowbrook location is more accurate and far more comfortable than the old air puff test.

S5 Advanced Testing — IOP Willowbrook
Beyond a Single Pressure Check

Advanced Glaucoma Testing at Superior Eye Care

A single IOP reading only tells part of the story. At our Willowbrook location, Dr. Sharon Mathukutty combines multiple diagnostic tools to build a complete picture of your eye health and glaucoma risk.

Tonometry — IOP Measurement

Tonometry measures the pressure inside your eye using a small, non-invasive contact device. After numbing drops are applied, the instrument gently touches the cornea for a fraction of a second — giving us an accurate intraocular pressure reading in millimeters of mercury (mmHg). No air puff. No discomfort.

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Visual Field Testing

Visual field testing maps your peripheral vision to identify areas where glaucoma-related vision loss may have already begun. Since glaucoma attacks side vision first — long before central vision is affected — this test is one of the most important tools for catching early signs of optic nerve damage.

Learn about Visual Field Testing
Optic Nerve Imaging

Using optical coherence tomography (OCT), we capture high-resolution cross-sectional images of the optic nerve and nerve fiber layer at the back of the eye. This lets us detect structural changes caused by elevated IOP — often before any vision loss has occurred — and track the progression of the disease over time.

Learn about Retinal Imaging
Full Glaucoma Evaluation

A full glaucoma evaluation combines tonometry, pachymetry (corneal thickness), visual field testing, and optic nerve imaging into one appointment. Dr. Mathukutty reviews all results together to assess your true risk level and, if needed, create a personalised monitoring or management plan before vision loss has a chance to begin.

Learn about Glaucoma Specialists
S6 Risk Factors — IOP Willowbrook
Know Your Risk

You May Be at Higher Glaucoma Risk If You Have:

Glaucoma can affect anyone, but certain risk factors raise your chances of developing the disease significantly. If one or more of these apply to you, a glaucoma screening at our Willowbrook location is strongly recommended — even if your vision feels completely normal right now.

Early detection is the only reliable way to prevent permanent vision loss. The earlier elevated IOP or optic nerve changes are identified, the more options you have to slow down the progression of the disease.

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Family History of Glaucoma Age 40 or Older High Eye Pressure (Elevated IOP) African or Hispanic Ancestry High Blood Pressure or Diabetes Previous Eye Injury or Surgery Thin Corneas (Identified by Pachymetry) Long-Term Steroid Use Narrow-Angle or Angle-Closure History
S7 Doctor Spotlight — IOP Willowbrook
SM
Dr. Sharon Mathukutty, O.D. Glaucoma Specialist &
Therapeutic Optometrist Book Appointment
Your Glaucoma Specialist

Expert Eye Pressure Care You Can Trust

Dr. Sharon Mathukutty, O.D. is a licensed therapeutic optometrist and glaucoma specialist certified by the Texas Board of Optometry. A graduate of the University of Houston College of Optometry (2010), Dr. Mathukutty has spent over 15 years providing personalized, specialist-level eye care to patients across Northwest Houston, Cypress, and the Willowbrook area.

At our Willowbrook location on Cypress Creek Parkway, Dr. Mathukutty combines advanced tonometry, optic nerve imaging, pachymetry, and visual field testing into a single, efficient glaucoma evaluation. Every result is reviewed together — not in isolation — so you leave with a clear picture of your eye health and a plan that fits your specific risk profile.

Texas Board of Optometry Glaucoma Specialist Therapeutic Optometrist UH College of Optometry Harris County Optometric Society
4.98 Star Google Rating
18,000+ Patient Visits
15+ Years Experience
3 Houston Area Locations
Meet Our Full Care Team
S8 FAQ — IOP Willowbrook
FAQ

Questions About Eye Pressure Testing

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How often should I schedule glaucoma IOP check-ups or eye pressure tests?
Adults with no risk factors and no family history of glaucoma should have their eye pressure checked as part of their annual eye exam. If you have elevated IOP, a previous glaucoma diagnosis, or significant risk factors — such as a family history, African or Hispanic ancestry, or high blood pressure — Dr. Mathukutty may recommend more frequent testing, typically every 3 to 6 months, to detect changes early and slow down the progression of the disease.
No. We use numbing eye drops before the test, so you feel nothing during the measurement. The contact tonometry method we use at our Willowbrook location is far more comfortable than the old air puff test — there is no sudden burst of air, no discomfort, and no need to brace yourself. The entire process takes only a few seconds per eye.
A reading above 21 mmHg is generally considered elevated intraocular pressure. However, a high reading does not automatically mean you have glaucoma — it means you need further evaluation. Dr. Mathukutty will review your corneal thickness (pachymetry), your optic nerve appearance, and your visual field results together to determine your true risk level. Many patients with elevated IOP never develop glaucoma; others develop it at normal pressure ranges. Context matters more than a single number.
Yes. You do not need a referral to book a glaucoma screening or eye pressure evaluation at our Willowbrook location. You can book directly online using the link above, or call our office at (281) 477-7811. We accept VSP, EyeMed, and most major medical and vision insurance plans. Same-day appointments are often available.
Not always. If elevated IOP is detected without signs of optic nerve damage or vision loss, Dr. Mathukutty may recommend close monitoring with frequent testing rather than immediate treatment. If glaucoma is confirmed or optic nerve changes are present, treatment options — such as prescription eye drops, laser therapy, or a referral to an ophthalmologist — will be discussed at your appointment. The right approach depends on your specific results, risk factors, and the stage of any disease present.
Yes. Dr. Mathukutty regularly sees patients who have been previously diagnosed with glaucoma or ocular hypertension and are looking for ongoing monitoring closer to home in Northwest Houston or the Willowbrook area. We can review your existing records, perform a full updated evaluation including visual field testing and optic nerve imaging, and provide co-management support alongside your treating ophthalmologist if needed.