Photorefractive Keratectomy Laser Eye Surgery

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Photorefractive Keratectomy Laser Eye Surgery


Overview


Photorefractive keratectomy (PRK) is a laser eye surgery designed to correct vision by reshaping the cornea. This procedure uses a precise excimer laser to permanently alter the cornea's surface.

Procedure Details


In PRK, the outer corneal layer, called the epithelium, is removed. The excimer laser then carefully reshapes the underlying corneal tissue to improve vision by optimizing refraction. Though the epithelium regenerates within days, the deeper corneal layers remain permanently altered, which is fundamental to PRK’s effectiveness.

Technology


PRK involves advanced technology. A computer system monitors the eye’s position 4,000 times per second to ensure precise laser application. This precision is essential for achieving the desired results.

Comparison with LASIK


PRK differs from LASIK mainly in how the surgery is performed. In LASIK, a flap is created in the cornea without removing the epithelium. On the other hand, PRK requires removing the epithelium, which takes time to heal. While PRK can be more painful and recovery slower than LASIK, both use lasers for surgical correction.

Potential Complications


While PRK is generally safe, potential complications include slow recovery, discomfort, glares, and halos. There's also a risk of over- or under-correction. Typically, surgeons perform PRK on one eye first to evaluate outcomes and ensure safety.

Conclusion


PRK is a reliable option for correcting myopia, but it's crucial to consult an eye specialist before deciding, as the changes are permanent. Always consider professional advice to ensure the best approach for your vision needs.

You can find the original non-AI version of this article here: Photorefractive Keratectomy Laser Eye Surgery.

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