PRK and SMILE are laser procedures used mainly for short-sight and astigmatism, but they approach the cornea very differently. These differences influence comfort, recovery speed, and suitability for particular eyes.
How each surgery works
PRK removes the surface cells and uses an excimer laser to reshape the cornea. SMILE creates a small internal lens-shaped piece of tissue with a femtosecond laser and removes it through a tiny incision.
- PRK is a surface treatment without a corneal flap
- SMILE is minimally invasive and flap-free, using a keyhole incision
- PRK involves more early discomfort and slower visual recovery
- SMILE usually offers faster comfort and return to daily activities
Suitability and long-term outcomes
Both can provide excellent long-term vision in carefully selected cases. Choice depends on corneal thickness, shape, and lifestyle.
- PRK may suit very thin corneas where tissue removal must be limited
- SMILE may cause less dry eye for some because fewer nerves are cut
- Sports or manual workers may favour SMILE’s small incision
- Your surgeon will explain which option provides the safest correction for your eyes
