PRK and LASEK are closely related surface laser procedures used when preserving corneal strength is important. Both remove or loosen the surface cells before reshaping the cornea underneath.
Technical differences
In PRK, the surface epithelium is removed and discarded before treatment. In LASEK, alcohol loosens this layer, which is then moved aside and sometimes repositioned afterwards.
- LASEK aims to preserve more surface tissue, though it may not always survive
- PRK has a long track record and is widely used worldwide
- Both typically use a bandage contact lens to protect the healing surface
- Pain and blurred vision for several days are common with either method
Choosing between them
Outcomes and recovery are broadly similar, so the choice often depends on surgeon preference and your eye characteristics. Safety and long-term stability remain the priorities.
- Both suit thinner corneas or people at higher ectasia risk
- Astigmatism and prescription range can be treated with each technique
- Expect several weeks before vision feels fully settled
- Detailed assessment decides whether one offers any specific advantage for you
