PRK Eye Surgery: A Proven Path to Clearer Vision

บทความโดย: seoteam seoteam วันที่อัพเดท: 14 May 2569

Ready to wake up with clear vision? While many people have heard of Lasik, it isn't the only way to achieve visual freedom. Photorefractive keratectomy, commonly known as PRK, is a time-tested laser eye surgery that has helped millions see the world more clearly, especially those who might not be eligible for other procedures.

Key Takeaway

• PRK is a surface-based laser surgery ideal for patients with thin corneas or active lifestyles.
• Unlike Lasik, PRK does not involve creating a corneal flap, reducing the risk of flap-related complications.
• The procedure effectively treats Myopia, Hyperopia, and astigmatism with high long-term success rates.
• Recovery takes slightly longer than SMILE Pro, but the final visual outcomes are equally excellent.

Table of Contents

• What is PRK?
• Who is an Appropriate Candidate for PRK?
• Side Effects of PRK
• Preparing for PRK
• Procedure of PRK
• Post-Procedure of PRK
• Conclusion

What is PRK?

Photorefractive keratectomy (PRK) was the first type of laser eye surgery for vision correction, preceding the popular Lasik method. It works by using an excimer laser to reshape the cornea, allowing light to focus correctly on the retina.

The primary difference between PRK and Femto Lasik is how the surgeon accesses the inner cornea. In PRK, the thin outer layer (epithelium) is gently removed rather than creating a flap. This layer naturally regrows within a few days after the surgery.

Who is an Appropriate Candidate for PRK?

PRK is an excellent alternative for individuals who may not qualify for SMILE Pro or other flap-based surgeries. You might be a great candidate if

• You have thin or irregular corneas.
• You are 18 years of age or older, with a stable eye prescription for at least one year
• You have a high degree of myopia (nearsightedness), hyperopia (farsightedness), or astigmatism.
• You participate in contact sports or have a job (like the military or police) where a corneal flap injury is a concern.
• You have chronically dry eyes, as PRK tends to cause less post-operative dryness than other methods.

Side Effects of PRK

Like any surgical procedure, PRK carries some risks and potential side effects. The good news is that serious complications are rare when performed by experienced surgeons using advanced technology. That said, informed consent matters, and you deserve to know what to expect.

• Eye discomfort or pain during the first few days while the epithelium heals: this is the most commonly reported experience after PRK and is typically managed with prescribed eye drops and pain relievers
• Blurry or hazy vision in the early recovery period, which gradually improves over several weeks
• Sensitivity to light (photophobia): wearing sunglasses outdoors is strongly recommended during recovery
• Dry eyes: PRK can temporarily reduce tear production; lubricating eye drops are commonly prescribed
• Glare, halos, or starbursts around lights, particularly noticeable at night; these usually diminish as the eye heals

Preparing for PRK

Good preparation sets the stage for the best possible outcome. Here's what to do, and what to avoid, before your PRK procedure.

• Stop wearing soft contact lenses at least 2 weeks before your pre-operative exam and surgery date; rigid gas-permeable lenses should be discontinued at least 3-4 weeks prior (your surgeon will give specific guidance)
• Contact lenses alter the shape of the cornea and can affect the accuracy of pre-op measurements, this step is non-negotiable
• Avoid eye makeup, lotions, or perfumes on the day of surgery to minimize infection risk
• Arrange for someone to drive you home, you will not be able to drive yourself after the procedure
• Wear comfortable clothing and avoid any eye makeup
• Follow any fasting or medication instructions provided by your care team

Procedure of PRK

The entire process is quick, usually taking about 10-15 minutes for both eyes

• Numbing: Anesthetic drops are applied so you won't feel pain.
• Epithelium Removal: The surgeon removes the thin outer layer of the cornea.
• Laser Reshaping: An excimer laser precisely sculpts the corneal tissue based on your unique prescription.
• Bandage Contact Lens: A clear, non-prescription “bandage” contact lens is placed over the eye to protect it while the surface cells regrow.

Post-Procedure of PRK

Recovery from PRK requires a bit more patience than LASIK, but with the right aftercare, the results are well worth it.

• Days 1-4: The healing phase

The first few days are the most uncomfortable. Your eyes may feel scratchy, watery, or sensitive to light as the epithelium grows back. This is completely normal. Prescribed antibiotic and anti-inflammatory eye drops should be used exactly as directed. Rest as much as possible and avoid rubbing your eyes.

• Days 4-7: Epithelium closure

By around day 4-5, the outer layer has typically closed over. Your doctor will examine your eyes and remove the bandage contact lens when appropriate. Vision may still be blurry or fluctuating — this is expected.

• Weeks 2-4: Vision stabilization begins

Most patients notice significant improvement in vision during this period. However, final visual clarity can take up to 1-3 months to fully stabilize, particularly for patients with higher prescriptions.

Conclusion

If you have been told your corneas are too thin for Lasik, or if your active lifestyle makes you hesitant about flap-based procedures, PRK remains a “gold standard” option. It offers a permanent solution for myopia, hyperopia, and astigmatism, providing the crisp, clear vision you’ve always wanted. Consult with an eye specialist today to see if PRK is the right fit for your eyes.