What Is PRK? Photorefractive Keratectomy Explained

Photorefractive keratectomy (PRK) offers a proven, flap-free path to clearer vision. If you’ve wondered how PRK works, who makes a good candidate, and what recovery looks like, this guide will walk you through every step of the process.

How PRK Works

PRK reshapes your cornea’s front surface to correct nearsightedness, farsightedness, or astigmatism without creating a flap. First, your surgeon carefully removes the thin epithelial layer covering the cornea. Next, an excimer laser delivers ultrafine pulses of cool ultraviolet light to ablate microscopic amounts of tissue and sculpt the cornea’s curvature. A therapeutic contact lens protects the eye while the epithelium regenerates over five to seven days.

Modern excimer lasers track eye movements in real time, ensuring each pulse lands precisely where needed to achieve your personalized vision correction.

Who Is a Good Candidate?

You may be an excellent PRK candidate if you:

• Are at least eighteen years old with stable vision for at least one year

• Have mild to moderate refractive errors (up to −8.00 D nearsightedness, +4.00 D farsightedness, and astigmatism up to 3.00 D)

• Possesses corneal thickness that is too thin for a LASIK flap

• Lead an active lifestyle or play contact sports where a flap could risk complications

• Have no active eye disease (for example, keratoconus or severe dry eye) and no autoimmune disorders

A thorough eye exam, including corneal topography and tear-film analysis, confirms your candidacy and helps your surgeon customize your treatment plan.

Benefits of PRK

Choosing PRK delivers several long-term advantages:

1. No Flap, No Flap-Related Risks
   Without a corneal flap, you avoid rare complications like flap dislocation or epithelial ingrowth that can occur years after LASIK.

2. Ideal for Thin Corneas
   PRK preserves more tissue in the cornea’s deeper layers, making it safer for patients whose corneas are thinner.

3. Perfect for Contact Sports
   Athletes and first responders appreciate that PRK eliminates the risk of flap trauma from collision, ensuring vision remains protected even during high-impact activities.

4. Stable Long-Term Results
   Multiple studies have shown PRK delivers similar visual outcomes to LASIK over decades, with minimal regression when properly performed and cared for.

Risks and Considerations

No procedure is without trade-offs. PRK recovery can be more uncomfortable in the first week when compared to LASIK:

• Haze and Sensitivity
  A mild corneal haze may appear during healing, but usually responds well to topical steroids prescribed by your surgeon. Light sensitivity and tearing are most pronounced in the first 48 to 72 hours.

• Longer Initial Healing
  The epithelium needs time to regenerate, so vision may fluctuate more initially and arrive at final clarity by month three instead of month one.

• Infection and Inflammation
  Although rare, infections or prolonged inflammation can occur. Strict adherence to your post-op drop schedule and follow-up visits keeps these complications at bay.

Recovery Process

Your PRK recovery follows a predictable timeline:

• Day One through Day Three
  Expect discomfort, gritty sensations, tearing and light sensitivity. Rest with eyes closed, use preservative-free lubricating drops, and wear dark sunglasses when moving around.

• Day Four through Day Seven
  As the epithelium regenerates, your therapeutic contact lens will be removed. Vision will gradually clear but still feel “soft” or “foggy.” Continue medicated drops exactly as directed.

• Week Two through Week Four
  Most patients resume light activities and return to work. Vision fluctuations persist, but reading and screen use become more comfortable.

• Month One through Month Three
  Vision stabilizes and sharpens. Your surgeon will verify healing and final refractive outcome. Most patients achieve their target vision between months two and three.

PRK vs Other Vision Correction Options

Cost & Financing

The national average cost for PRK ranges from $2,000 to $3,000 per eye. Most vision plans do not cover elective laser procedures, but will apply toward the pre-op exam or follow-up visits. Vantage Eye Center offers:

• Flexible Financing
  Zero-interest and low-interest payment plans through leading medical financing partners.

• Seasonal Specials
  Periodic promotions that reduce out-of-pocket costs on bilateral treatments.

Ask our patient advisors to review your payment options and help you select the plan that best fits your budget.

Not a Candidate for LASIK? Explore Your Alternatives

If you’re not a candidate for LASIK—due to thin corneas, dry eye, or other factors—you still have options like PRK, implantable collamer lenses, and refractive lens exchange; learn more on our LASIK Alternatives

Frequently Asked Questions

Does PRK hurt?
Patients typically experience more discomfort than with LASIK on days one through three, but we prescribe oral and topical medications to keep them comfortable.

How soon can I drive?
Most patients regain functional vision by days four to seven. Always bring a driver to your day-one and day-four follow-up visits.

Are results permanent?
Yes. PRK permanently reshapes the cornea. Age-related changes like presbyopia may occur later in life, but will not reverse your PRK correction.

Ready to Learn if PRK Is Right for You?

Contact Southwest Eye Institute to request your comprehensive PRK consultation. Our experienced surgeons will guide you through every step and help you achieve lasting, flap-free vision correction.