Photorefractive Keratectomy (PRK)

Photorefractive Keratectomy (PRK) is a type of laser eye surgery used to correct refractive errors such as nearsightedness, farsightedness, and astigmatism. It reshapes the cornea to improve how light is focused on the retina, enhancing vision clarity.

How PRK Works

1
Surface layer removedPRK removes the outer layer of the cornea (epithelium) to access the underlying tissue.
2
Laser reshapes the corneaAn excimer laser is then used to reshape the cornea.
3
Natural healingThe epithelium naturally regenerates over a few days, allowing the cornea to heal and stabilize.

Ideal Candidates for PRK

PRK is suitable for individuals aged 18 or older with stable vision, healthy eyes, and no significant eye conditions like severe dry eye or glaucoma. It’s also preferred for individuals with active lifestyles or those in professions with a risk of eye injuries, as it avoids the creation of a corneal flap.

The PRK Procedure

The procedure typically takes about 10 minutes per eye. After numbing drops are applied, the epithelium is removed, and the laser reshapes the cornea. A protective contact lens is placed over the eye to aid healing.

Recovery and Aftercare

Recovery from PRK takes a bit longer compared to LASIK, as the epithelium needs time to regenerate. Vision may be blurry for a few days, but it improves over weeks. Patients are advised to avoid strenuous activities and follow the prescribed medication regimen for a smooth recovery.

Risks and Considerations

While PRK is safe, potential side effects include dry eyes, light sensitivity, and halos around lights during nighttime. Rare complications include scarring or infection.

Conclusion

PRK is an effective alternative for individuals seeking vision correction but are not ideal candidates for LASIK. By consulting with an eye care professional, you can determine if PRK is the right choice for your vision needs.

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