PRK (Photorefractive Keratectomy) is a type of laser vision correction surgery that helps reduce dependence on glasses and contact lenses. It has been performed for decades and remains an important option for patients seeking clearer vision.

At New York Eye & Laser, we help patients understand their vision correction options and determine whether PRK may be appropriate for their eyes, lifestyle, and visual goals. If you are considering laser eye surgery, learning how PRK works, what recovery involves, and how it compares with LASIK can help you make an informed decision.

What Is PRK Surgery?

PRK stands for Photorefractive Keratectomy. It is a laser vision correction procedure that reshapes the cornea, the clear front surface of the eye, so that light focuses more accurately on the retina.

PRK can correct certain degrees of:

• Nearsightedness (Myopia): Difficulty seeing distant objects clearly.
• Farsightedness (Hyperopia): Difficulty focusing on nearby objects.
• Astigmatism: Blurred or distorted vision caused by an irregular curvature of the cornea or lens.

Unlike LASIK, PRK does not require the creation of a corneal flap. Instead, the thin outer layer of the cornea is removed before the laser reshapes the underlying tissue. This surface layer regenerates as the eye heals.

How Does PRK Surgery Work?

PRK is generally performed as an outpatient procedure using numbing eye drops. The process typically includes the following steps:

1. Comprehensive Eye Examination

Before surgery, your doctor evaluates your prescription, corneal shape and thickness, tear film, and overall eye health. These measurements help determine whether PRK is a suitable option.

2. Preparation

Numbing eye drops are applied to help minimize discomfort during the procedure. Your surgical team will explain what to expect and answer your questions.

3. Treatment of the Cornea

The thin outer layer of the cornea, called the epithelium, is removed. An excimer laser then reshapes the cornea according to your prescription.

4. Placement of a Bandage Contact Lens

A temporary bandage contact lens is usually placed on the eye to protect the healing surface and improve comfort. It is removed by your doctor when the epithelium has healed sufficiently.

5. Recovery and Follow-Up

Your doctor will provide instructions for prescribed eye drops, eye protection, and follow-up visits to monitor healing and visual recovery.

What Are the Benefits of PRK?

PRK offers several potential benefits for appropriately selected patients.

No Corneal Flap

PRK does not create a corneal flap. This can be an important consideration for patients whose occupations, sports, or activities involve potential eye impact.

An Alternative to LASIK

Some patients may not be ideal LASIK candidates because of certain corneal characteristics or other clinical considerations. PRK may be an alternative for selected patients after a thorough evaluation.

Effective Vision Correction

PRK can provide long-term correction of eligible refractive errors. Individual outcomes vary depending on the prescription, healing response, and overall eye health.

Suitable for Certain Active Lifestyles

Because there is no corneal flap, PRK may be considered for patients who participate in contact sports or activities involving a risk of eye trauma. However, the appropriate procedure depends on each patient’s individual circumstances.

PRK vs. LASIK: What Is the Difference?

PRK and LASIK both use laser technology to reshape the cornea, but they differ in how the eye is treated and how recovery progresses.

PRK 激光视力矫正手术

• No corneal flap is created.
• The outer corneal layer must regenerate during healing.
• Initial recovery is generally slower.
• Temporary discomfort, light sensitivity, and blurry vision may be more noticeable during the first several days.

LASIK

• A thin corneal flap is created before the laser reshapes the underlying tissue.
• Visual recovery is often faster.
• Many patients experience less discomfort during the initial recovery period.
• A corneal flap introduces specific considerations for patients at risk of eye trauma.

Neither procedure is best for everyone. Your eye doctor will recommend an approach based on your corneal measurements, prescription, eye health, lifestyle, and visual goals.

What Is the Recovery Time After PRK?

PRK recovery typically takes longer than LASIK recovery because the surface layer of the cornea must heal.

During the first few days, patients may experience discomfort, tearing, light sensitivity, and blurry vision. Vision generally improves gradually over the following days and weeks, while stabilization may take several weeks or longer.

Recovery varies from person to person. Your doctor will explain the expected timeline for your eyes and arrange follow-up appointments.

To support healing:

• Use prescribed eye drops exactly as directed.
• Do not rub your eyes.
• Wear eye protection as instructed.
• Avoid swimming and activities that could expose your eyes to contamination until your doctor says it is safe.
• Attend all scheduled follow-up visits.
• Avoid driving until your vision is adequate and your doctor confirms it is safe.

Contact your eye doctor promptly if you experience severe or worsening pain, sudden vision changes, or other concerning symptoms.

What Are the Risks of PRK Surgery?

Like any surgical procedure, PRK has potential risks and side effects. These may include:

• Temporary discomfort and light sensitivity.
• Dry eye symptoms.
• Fluctuating or blurry vision during recovery.
• Glare, halos, or difficulty with night vision.
• Delayed healing or corneal haze.
• Residual refractive error or the possible need for additional treatment.
• Rare but potentially serious complications, including infection.

A comprehensive evaluation and careful post-operative care help your doctor assess and manage these risks. Your doctor will discuss the potential benefits, limitations, and alternatives before surgery.

Who Is a Good Candidate for PRK?

PRK may be an option for adults seeking to reduce their dependence on glasses or contact lenses. Candidacy depends on several factors, including:

• A stable prescription.
• Adequate corneal thickness and a suitable corneal shape.
• Healthy eyes and an appropriate healing profile.
• Evaluation of dry eye symptoms and tear film quality.
• Realistic expectations about the benefits and limitations of surgery.

Certain corneal conditions, uncontrolled eye disease, significant dry eye, unstable prescriptions, and some medical conditions may affect eligibility. Not everyone who wants laser vision correction is a suitable candidate.

The best way to determine whether PRK is right for you is through a comprehensive consultation with an eye care professional.

Is PRK Right for You?

PRK remains an important option for patients seeking laser vision correction, particularly when a flap-free procedure may be preferable. However, the right choice depends on your individual eye health, prescription, corneal characteristics, lifestyle, and expectations.

At New York Eye & Laser, we help patients understand their options, including PRK and other approaches to vision correction. Our goal is to provide clear information and personalized guidance so you can make an informed decision about your eye care.

Schedule a Vision Correction Consultation

Interested in learning whether PRK may be right for you? Contact New York Eye & Laser to schedule a consultation and discuss your vision correction options.

Call us at 718-939-2020 to learn more or schedule an appointment.

This article is for educational purposes only and does not replace a comprehensive eye examination or personalized medical advice.