Introduction

Glaucoma is an eye condition that gradually damages the optic nerve, often due to increased intraocular pressure (IOP). If left untreated, it can lead to irreversible vision loss. While medications and laser treatments can help manage IOP, surgery is frequently required when these methods no longer control the condition effectively.

Patients often wonder, "How long will the surgery take?" The duration varies depending on the type of surgery, the severity of the glaucoma, and individual patient needs. In this guide, we’ll explore the different types of glaucoma surgeries, explain what to expect during the procedure, and highlight why SNU Eye Clinic in Seoul is a trusted choice for glaucoma treatment.

What Is Glaucoma and Why Is Surgery Sometimes Necessary?

Understanding Glaucoma

Glaucoma refers to a group of eye diseases that cause damage to the optic nerve, usually because of high intraocular pressure. This pressure, if uncontrolled, can damage the optic nerve and lead to permanent vision loss. Because it often develops gradually with few early symptoms, glaucoma is sometimes referred to as the “silent thief of sight.”

When Surgery Is Needed

Surgical intervention is typically recommended for glaucoma patients when:

Medications and laser treatments no longer effectively control eye pressure.
Vision continues to deteriorate despite treatment.
There is an increased risk of permanent damage to the optic nerve.
The glaucoma is progressing rapidly and needs immediate intervention.

Surgical vs. Non-Surgical Treatments

Non-surgical treatments like prescription eye drops and laser therapies such as Selective Laser Trabeculoplasty (SLT) can help manage IOP but may not offer long-term control. On the other hand, surgical options are designed to create new drainage pathways in the eye, offering more durable results, especially for patients with moderate to advanced glaucoma.

Types of Glaucoma Surgery and Their Duration

Each glaucoma surgery type comes with its own benefits, risks, and duration. The choice of procedure will depend on the patient's specific condition and the surgeon’s recommendations.

1. Laser Surgery for Glaucoma (5-15 Minutes)

Laser surgeries are minimally invasive, quick, and often performed in an outpatient setting. Common laser treatments include:

Selective Laser Trabeculoplasty (SLT): A laser is used to improve drainage in the trabecular meshwork to lower IOP. This procedure typically takes 5–10 minutes per eye.
Laser Peripheral Iridotomy (LPI): Used to treat angle-closure glaucoma, this procedure involves creating a small hole in the iris to help fluid drain properly. LPI usually takes about 10–15 minutes.

2. Trabeculectomy (45-60 Minutes)

A traditional approach to glaucoma surgery, trabeculectomy creates a new drainage pathway in the eye. This procedure is performed under local anesthesia and typically lasts 45 to 60 minutes. It is ideal for patients with moderate to severe glaucoma who haven't responded well to other treatments.

3. Glaucoma Drainage Implants (60-90 Minutes)

For long-term pressure control, glaucoma drainage implants are surgically placed in the eye. This procedure usually takes 1 to 1.5 hours, depending on its complexity. The tube inserted into the eye helps redirect fluid to regulate intraocular pressure.

4. Minimally Invasive Glaucoma Surgery (MIGS) (15–30 Minutes)

MIGS procedures are designed to be less invasive, with faster recovery times. Some MIGS techniques include:

iStent Inject®: A tiny stent is inserted into the trabecular meshwork to aid in drainage (15 minutes).
Kahook Dual Blade® Goniotomy: This procedure uses a micro-incision to enhance fluid outflow (20–30 minutes).
Hydrus® Microstent: A small device is implanted to help control IOP (20–30 minutes).

MIGS is frequently combined with cataract surgery for patients dealing with both conditions.

Factors That Affect Surgery Duration

Several factors can influence the time required for glaucoma surgery:

Condition Complexity: Advanced glaucoma may require more intricate procedures.
Surgeon’s Experience: Highly skilled surgeons can typically perform the surgery more efficiently, ensuring precision and reducing time.
Patient's Health: The overall health of the patient can affect their ability to tolerate surgery.
Anesthesia Type: Local anesthesia generally leads to shorter surgeries than general anesthesia.

The Step-by-Step Process of Glaucoma Surgery

Understanding the typical steps of glaucoma surgery can ease patient concerns. Here's a general overview of what happens during the procedure:

Pre-Surgery Preparation
A comprehensive eye exam is conducted, and the most appropriate surgery is selected. In some cases, patients may need to stop certain medications before surgery. Antibiotic eye drops may also be prescribed to prevent infection.
Anesthesia and Sedation
Most glaucoma surgeries are done with local anesthesia, meaning the patient stays awake but feels no pain. Sedation ensures the patient remains comfortable during the procedure. In more complex cases, general anesthesia may be necessary.
Surgical Procedure
Depending on the surgery type, a small incision is made to either create a new drainage pathway or insert a drainage device. The procedure is performed under a microscope to ensure precision.
Post-Surgery Observation
After surgery, patients are monitored for 30 minutes to an hour. A protective shield is placed over the eye to prevent injury. Most glaucoma surgeries are performed on an outpatient basis, meaning patients can return home the same day.

What to Expect During Recovery

Recovery times vary by procedure type. While some patients recover quickly, others may take weeks or even months to stabilize their vision fully.

Immediate Post-Surgery (First 24 Hours)

Blurry vision may occur, typically improving within a few days.
Mild discomfort and eye redness are common but usually subside within a few weeks.
Sensitivity to light can be managed with sunglasses.

Short-Term Recovery (First Few Weeks)

Regular follow-up appointments are necessary to monitor healing.
Patients will need to use prescribed eye drops to prevent infection and inflammation.
Activity restrictions, such as avoiding strenuous exercise, are advised to prevent complications.

Long-Term Recovery (One to Three Months)

By one month, most patients see significant improvements in eye pressure.
Complete healing may take up to three months, especially after more invasive surgeries like trabeculectomy.

Effectiveness and Success of Glaucoma Surgery

Glaucoma surgery is highly effective at controlling eye pressure and preventing further vision loss. However, success rates vary based on the procedure:

Laser Surgeries (SLT, LPI): 80-90% success rate, but results may diminish over time.
Trabeculectomy: 70-85% success rate for at least five years.
Drainage Implants: 75-90% long-term success rate.
MIGS: Moderate pressure reduction with fewer complications.

Choosing the Right Clinic: Why SNU Eye Clinic?

Choosing an experienced surgeon and clinic is essential for a successful outcome. SNU Eye Clinic in Seoul is renowned for its high success rates and expert care in glaucoma surgery.

Why SNU Eye Clinic?

Experienced Surgeons: Led by Dr. Chung Eui Sang, with over 25 years of expertise in glaucoma surgery.
State-of-the-Art Technology: Uses the latest laser systems and minimally invasive techniques for precise outcomes.
Patient-Centered Care: Each treatment plan is customized to meet individual patient needs, ensuring the best possible results.

Patient Testimonials

Patients at SNU Eye Clinic report high satisfaction, noting the skilled medical team, smooth procedures, and comprehensive aftercare.

Conclusion

Glaucoma surgery is an effective way to manage eye pressure and prevent further vision loss. While the duration of the procedure varies based on the surgery type, most procedures are completed within an hour. With advancements in surgical techniques, glaucoma surgery has become safer and more efficient. Choosing a trusted clinic, like SNU Eye Clinic, ensures expert care and a smooth recovery.

If you or a loved one is considering glaucoma surgery, don’t wait—schedule a consultation with SNU Eye Clinic today to preserve your vision.