LASIK (Laser-Assisted-in-Situ keratomileusis) and PRK (Photo Refractive Keratectomy) surgery, are similar types of laser eye surgery designed to correct vision problems such as nearsightedness, myopia and astigmatism. The PRK method has been used before the LASIK procedure, but until now RPK is still regularly performed by several clinics. And LASIK has the same overall effect as the PRK-it's just a slightly different way to correct the troubled vision. Both of these operations work by changing the shape of the cornea.
Then, What's the difference between LASIK and PRK? There are some differences that we can know between the two.
1. Action Procedures
In LASIK, an ophthalmologist makes an incision (with a laser or a knife) in the cornea to create a tissue fold. The tissue flap is lifted so that the laser can be applied to reshape the inner layers of the cornea. Computer-controlled surgical surgeons carefully reshape the corneal lining to correct the imperfections of curvature that cause distorted vision. The corneal flap is then put back into place and heals the corneal part that is replaced within a few days. In PRK, an ophthalmologist does not create a fold of corneal tissue. Instead, the outer layer of the cornea is expelled to expose the area to re-form with the laser.
2. Usage in patients.
LASIK tends to be used for almost all patients with problematic eyes without having general criteria. While the PRK is better used for people whose eyes meet certain criteria, such as having a thin cornea or dry eyes are chronic.
3. Duration of postoperative recovery.
The most significant difference between PRK and LASIK is the initial discomfort and speed of visual recovery. Recovery from PRK takes slightly longer than LASIK because the outer layers of the cornea take time to heal. During this recovery period, PRK patients were given prescription medications (antibiotic drops and anti-inflammatory) to improve healing and reduce discomfort after eye surgery. Drops are usually prescribed for several months after surgery.
LASIK recovery is much faster. The discomfort following LASIK surgery is usually mild and short term.
4. The perceived effect.
PRK patients can expect it to take one to three days for discomfort, blurry effects and other post-surgical effects to subside, and it will take up to six months for the vision to reach maximum sharpness and clarity of the peak.
While the effects after LASIK eye surgery, most patients reported seeing normally within hours after the procedure, their vision continues to increase gradually for less than four months before reaching peak quality.
Keep in mind that both of these eye surgery actions are safe and effective and provide a very high level of patient satisfaction. Choosing between PRK and LASIK is the best decision made in consultation with an ophthalmologist. So do not hesitate, because history has shown that whichever you choose, you may be very happy with the results.