What Is Glaucoma? | Austin Glaucoma Specialist Zarmeena Vendal, MD | Westlake Eye Specialists
Glaucoma Center · Austin, TX

What Is Glaucoma?

Expert diagnosis and treatment from Austin's trusted glaucoma specialists. Often called the "silent thief of sight," glaucoma can be slowed or stopped with early, advanced care led by Harvard-trained Dr. Zarmeena Vendal, MD.

Why Central Texas Trusts Us
5Locations across Central Texas — Austin, Kyle, Georgetown, Killeen & New Braunfels
1stPhysician in the Austin area to introduce the OMNI canaloplasty device & iDose TR implant
HarvardFellowship-trained glaucoma specialist & board-certified ophthalmologist
01 — Overview

Austin's Trusted Glaucoma Specialists

Glaucoma is one of the leading causes of irreversible blindness worldwide. Often progressing silently without symptoms, it has earned the nickname "the Silent Thief of Sight." At Westlake Eye Specialists, we protect your vision through early diagnosis and advanced treatment — serving patients across Austin, Kyle, Killeen, Georgetown, and New Braunfels, TX with a personalized, compassionate approach.

Explore Our Glaucoma Care

Every Glaucoma Page, In One Place

Jump directly to any glaucoma topic — from our modern interventional approach to specific subtypes, in-office laser treatments, and minimally invasive surgical options.

★ Interventional Glaucoma — Austin's Modern Approach

A proactive paradigm shift: introducing minimally invasive surgery and laser therapy earlier to control pressure, reduce the daily drop burden, and preserve vision long-term.

Learn More →

In-Office Treatments

Non-Surgical Options

Tissue & Canal MIGS

Implant-Free Options
05 — Your Glaucoma Expert

Meet Dr. Zarmeena Vendal, MD

Dr. Zarmeena Vendal, MD — glaucoma specialist in Austin, TX at Westlake Eye Specialists

Dr. Zarmeena Vendal, MD is a nationally recognized eye surgeon and one of the most experienced glaucoma specialists in Central Texas. She trained at Harvard Medical School, completing a glaucoma fellowship at the Massachusetts Eye and Ear Infirmary. As the founder of Westlake Eye Specialists, she combines world-class training with a passion for patient-centered care.

  • Laser-assisted glaucoma therapies (SLT / DSLT)
  • Minimally Invasive Glaucoma Surgery (MIGS)
  • Advanced imaging for early diagnosis
  • Combined cataract and glaucoma procedures
  • First in the Austin area to introduce OMNI canaloplasty & iDose TR
Read Her Full Bio →
Illustration of the eye's trabecular meshwork and drainage system in glaucoma
Understanding the Disease

What Is Glaucoma?

Glaucoma is not a single disease but a group of eye conditions that damage the optic nerve — the critical structure that sends visual information from your eye to your brain. The most common cause is increased pressure inside the eye, known as intraocular pressure (IOP). This pressure gradually erodes the nerve fibers, often without pain or noticeable vision changes until permanent damage has occurred.

Why Early Detection Is Crucial

Because most types of glaucoma cause no early symptoms, regular comprehensive eye exams are vital. Once vision is lost to glaucoma, it cannot be restored — but early diagnosis and treatment can slow or stop the progression, helping you maintain vision for life. We use advanced imaging, visual field testing, and pressure monitoring to detect glaucoma at its earliest stages.

Causes & Risk Factors

What Causes Glaucoma?

The eye continuously produces a fluid called aqueous humor, which drains through an angle where the iris meets the cornea. When this system becomes blocked or inefficient, fluid builds up and intraocular pressure rises. Over time, that pressure damages the optic nerve — leading to peripheral vision loss and, eventually, blindness if untreated.

Risk factors include:

Age over 60
Family history of glaucoma
African, Asian, or Hispanic heritage
Diabetes, high blood pressure, or heart disease
Thin corneas
Prolonged corticosteroid use
History of eye injury or surgery
Visualization of peripheral vision loss caused by glaucoma
Types of Glaucoma

Custom Care for Every Subtype

Each form of glaucoma behaves differently and may require unique treatment. Explore each type for deeper insight into symptoms, causes, and treatment options.

Primary Open-Angle

The most common form — slow-progressing and painless, requiring ongoing monitoring and proactive treatment.

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Angle-Closure

A sudden blockage of fluid drainage that is a medical emergency requiring immediate evaluation.

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Normal-Tension

Optic nerve damage despite normal eye pressure. Advanced diagnostics are essential for detection.

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Pigmentary

Pigment dispersion from the iris clogs the eye's drainage channels, raising intraocular pressure.

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Congenital

A rare, inherited form seen in infants and children. Early detection and pediatric care are critical.

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Secondary

Caused by injury, medications, or other eye conditions. Treatment addresses both cause and pressure.

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Detection

How Is Glaucoma Diagnosed?

We use cutting-edge diagnostic tools to provide the most accurate glaucoma assessments in Central Texas — helping Dr. Vendal and her team identify glaucoma early and monitor it closely.

Tonometry

Measures intraocular pressure (IOP), the leading glaucoma risk factor.

OCT Imaging

Optical Coherence Tomography scans the optic nerve for early damage.

Visual Field

Assesses peripheral vision loss across the field of view.

Gonioscopy

Evaluates the eye's drainage angle to classify glaucoma type.

Pachymetry

Measures corneal thickness, which influences pressure readings.

Treatment Options

Lowering Pressure, Preserving Vision

The goal of treatment is to lower intraocular pressure and protect the optic nerve. Depending on your type and severity, Dr. Vendal may recommend any of the following.

In-Office Treatments

In-Office Laser

SLT / Direct SLT

A painless, non-surgical laser that stimulates the eye's natural drainage to lower pressure. No downtime.

Details →
Slow-Release Implant

AbbVie Durysta®

A bimatoprost implant that maintains lower IOP for months from a single in-office treatment.

Details →
Sustained Drug Delivery

iDose TR

A breakthrough implant delivering continuous, drop-free therapy 24 hours a day. 8 of 10 patients were drop-free at 12 months.

Details →

Minimally Invasive Glaucoma Surgery (MIGS)

MIGS Stents

Trabecular Bypass & Stents

FDA-approved micro-stents — iStent Inject®, iStent Infinite®, and Hydrus® — enhance fluid drainage, often with cataract surgery.

Overview →
Tissue Excision

Goniotomy & KDB

Goniotomy with the Kahook Dual Blade, MST Trabectome®, and Glaukos iAccess® remove diseased drainage tissue.

Details →
Canal-Based Surgery

OMNI® Surgical System

Performs canaloplasty and trabeculotomy in one session, restoring natural drainage through Schlemm's canal — no implants.

Details →

Dr. Vendal will discuss which approach is right for you based on your pressure, optic nerve health, lifestyle, and whether cataract surgery is also needed. See our full interventional glaucoma program →

Why Westlake

Why Patients Choose Us

Specialist-led glaucoma care built on world-class training, advanced technology, and a genuinely patient-first approach.

Harvard-Trained Specialists

Fellowship training from Harvard's Massachusetts Eye and Ear, applied to every consultation.

Leader in MIGS

First in the Austin area to introduce OMNI canaloplasty and the iDose TR implant.

Advanced Diagnostics

OCT imaging, visual field testing, and pressure monitoring catch glaucoma before vision loss.

Unrushed Consultations

We take the time to explain your diagnosis clearly, so you feel confident in your plan.

5 Central Texas Locations

Austin, Kyle, Georgetown, Killeen, and New Braunfels — specialist care close to home.

Trusted by Thousands

A reputation across Central Texas built on outcomes, compassion, and patient-centered care.

06 — Frequently Asked Questions

Glaucoma & Treatment FAQ

Clear, direct answers to the questions Central Texas patients ask most about glaucoma and our interventional approach.

What is glaucoma? +
Glaucoma is a group of eye conditions that damage the optic nerve, usually due to elevated intraocular pressure (IOP). It often progresses without symptoms — the "silent thief of sight." Vision already lost cannot be restored, but early diagnosis and treatment can slow or stop progression so you keep the vision you have.
What is "interventional glaucoma" care? +
Interventional glaucoma is a proactive, modern approach. Instead of relying solely on daily eye drops, our Austin physicians use advanced, minimally invasive procedures — such as lasers or micro-stents — earlier in the disease to safely lower eye pressure, preserve vision, and improve quality of life. Learn more about interventional glaucoma →
What is Minimally Invasive Glaucoma Surgery (MIGS)? +
MIGS is a group of microscopic procedures that lower IOP through tiny incisions and specialized devices that improve the eye's natural fluid drainage. Because they are minimally invasive, they offer faster recovery and a higher safety profile than older, traditional glaucoma surgeries.
Is laser glaucoma treatment painful? +
No. Laser treatment such as Selective Laser Trabeculoplasty (SLT) is typically painless, performed in our clinics in just a few minutes with no incisions. Most patients feel only a slight tapping sensation or see brief flashes of light, and can return to their normal routine the next day.
If I have a MIGS or laser procedure, can I stop taking my eye drops? +
For many patients, yes. A primary goal of our care is to reduce dependence on topical medications. While we can't guarantee being drop-free forever, many patients significantly reduce their daily drops and some stop them entirely after a successful intervention.
Can these procedures cure my glaucoma? +
To be straightforward, there is currently no cure for glaucoma, and vision already lost cannot be restored. However, interventional treatments are highly effective at halting progression. By proactively managing your eye pressure, our surgeons work to protect the vision you still have for the long term.
Am I a good candidate for interventional treatment? +
You may be an excellent candidate if you are:
  • Newly diagnosed and prefer to avoid starting daily drops
  • Struggling with the cost, routine, or side effects of glaucoma medications
  • Experiencing pressure that isn't well controlled despite drops
  • Already scheduled for cataract surgery — many MIGS can be done at the same time
Are MIGS and laser treatments covered by insurance or Medicare? +
Yes. Because they are proven, medically necessary procedures, most MIGS and laser treatments are covered by Medicare and major commercial insurers in Texas. Our administrative team verifies your coverage and explains any out-of-pocket costs before treatment.
What is the recovery time like? +
Recovery is generally fast. After laser treatment, patients typically resume normal activities within 24 hours. After MIGS, you may have mild blurry vision or slight discomfort for a few days, but recovery is much smoother than with invasive glaucoma surgery. Your doctor provides clear aftercare instructions.
Glaucoma Care Across Central Texas

Glaucoma Specialist FAQ by Location

Wherever you are in Central Texas, you'll receive the same specialist-led care from Dr. Vendal and her team. All scheduling routes through one number: (512) 472-4011.

Westlake at Austin (Main Office)5656 Bee Caves Road, Suite F-200, Austin, TX 78746
South Austin Surgery Center5200 Davis Ln, Bldg B, Suite 120, Austin, TX 78749
(512) 472-4011
Where can I see a glaucoma specialist in Austin, TX? +
Westlake Eye Specialists provides glaucoma care in Austin at its main office, Westlake at Austin (5656 Bee Caves Road, Suite F-200, Austin, TX 78746), with a dedicated South Austin Surgery Center at 5200 Davis Ln, Bldg B, Suite 120. Schedule with Harvard-trained specialist Dr. Zarmeena Vendal, MD by calling (512) 472-4011.
Do you offer interventional glaucoma and MIGS in Austin? +
Yes. Our Austin practice is the home of our interventional glaucoma program, offering in-office SLT/DSLT laser, Durysta® and iDose TR implants, and the full range of MIGS — including iStent, Hydrus®, and OMNI® canaloplasty — at our South Austin Surgery Center. Explore interventional glaucoma in Austin →
Who is the best glaucoma doctor in Austin? +
Dr. Zarmeena Vendal, MD is one of Austin's most experienced glaucoma specialists — Harvard fellowship-trained, board-certified, and the first physician in the Austin area to introduce the OMNI canaloplasty device and the iDose TR implant. She founded Westlake Eye Specialists and serves on advisory boards for leading interventional glaucoma companies.
Village at Kyle Clinic20871 N. IH-35, Suite 100, Kyle, TX 78640
(512) 472-4011
Is there a glaucoma doctor near Kyle, TX? +
Yes. Westlake Eye Specialists has a satellite clinic at Village at Kyle, 20871 N. IH-35, Suite 100, Kyle, TX 78640. Kyle and South Austin-area patients receive the same specialist-led glaucoma care from Dr. Zarmeena Vendal's team. Call (512) 472-4011 to schedule.
What glaucoma services are available in Kyle? +
Our Kyle clinic offers comprehensive glaucoma evaluation and monitoring — including tonometry, OCT imaging, and visual field testing — plus treatment planning for laser therapy and MIGS. Surgical procedures are performed at our nearby South Austin Surgery Center.
How do I book a glaucoma appointment in Kyle? +
Call (512) 472-4011 or request an appointment online. All scheduling for the Kyle clinic routes through our central practice line, and our team will match you with the right specialist and location for your needs.
Georgetown Clinic1625 Williams Dr., Ste. 301, Georgetown, TX 78628
(512) 472-4011
Do you offer glaucoma treatment in Georgetown, TX? +
Yes. Westlake Eye Specialists serves Georgetown at 1625 Williams Dr., Ste. 301, Georgetown, TX 78628, providing comprehensive glaucoma diagnosis and advanced treatment options with Dr. Zarmeena Vendal's team. Call (512) 472-4011 to schedule.
Can Georgetown patients get interventional glaucoma care? +
Absolutely. Georgetown patients have full access to our interventional glaucoma program — including SLT/DSLT laser, the iDose TR implant, and MIGS procedures. Diagnosis and follow-up happen in Georgetown; surgical care is coordinated at our Austin surgery center.
Is glaucoma care in Georgetown covered by Medicare? +
Most medically necessary glaucoma treatments, including laser and MIGS, are covered by Medicare and major Texas insurers. Our team verifies your Georgetown-area coverage and explains any costs before treatment.
Killeen Clinic2301 S Clear Creek Rd., Killeen, TX
(512) 472-4011
Where can I find glaucoma care in Killeen, TX? +
Westlake Eye Specialists has a satellite clinic in Killeen at 2301 S Clear Creek Rd., offering glaucoma diagnostics, in-office laser therapy, and MIGS planning with Dr. Zarmeena Vendal's team. Call (512) 472-4011 to schedule a comprehensive eye exam.
Do Killeen patients see the same glaucoma specialist? +
Yes. Killeen patients receive the same Harvard-trained, specialist-led glaucoma care available across all five of our Central Texas locations. Advanced diagnostics are performed locally, with surgical procedures coordinated at our Austin surgery center.
How do I schedule a glaucoma exam in Killeen? +
Call (512) 472-4011 or request an appointment online. Our central scheduling team handles all Killeen clinic appointments and will guide you to the right specialist for early detection and treatment.
New Braunfels Clinic218 E Austin St., New Braunfels, TX
(512) 472-4011
Is there a glaucoma specialist in New Braunfels, TX? +
Yes. Westlake Eye Specialists serves New Braunfels at 218 E Austin St., providing the same advanced interventional glaucoma care available throughout Central Texas. Call (512) 472-4011 to book an appointment with Dr. Zarmeena Vendal's team.
What glaucoma treatments are offered in New Braunfels? +
Our New Braunfels clinic provides full glaucoma diagnostics and treatment planning — including laser therapy (SLT/DSLT), slow-release implants like Durysta® and iDose TR, and MIGS surgical options coordinated at our Austin surgery center.
How early should I be screened for glaucoma in New Braunfels? +
Because glaucoma is often symptomless, regular comprehensive eye exams are essential — especially if you're over 60, have a family history, or live with diabetes or high blood pressure. New Braunfels patients can schedule a screening by calling (512) 472-4011.

Schedule a Glaucoma Consultation Today

If you've been diagnosed with glaucoma — or are at high risk — don't wait. Schedule with Dr. Zarmeena Vendal, a Harvard-trained glaucoma expert and trusted Austin glaucoma specialist. We're here to preserve your sight, independence, and quality of life every step of the way.