LASEK is a laser surgery that involves reshaping the cornea by folding back the epithelium after it has been loosened up by injecting an alcohol solution. An excimer laser is then used to reshape the cornea before the flap is folded back onto the cornea.
Surface surgeries (PRK, LASEK) are recommended in case of dry eye syndrome.
The end result of the refractive correction is similar to that of Femto-LASIK technique nevertheless the postoperative recovery process is slower.
For the patient, the main difference between femto-LASIK and superficial surgeries, that is PRK, LASEK and Epi-LASIK) is the recovery time. After a surface laser eye surgery, it can take up to 5 to 7 days for the eyes to be completely healed and for vision to be clearer and stable.
Why is PRK or LASEK recommended to certain patients, instead of femto-LASIK?
Generally speaking, the majority of patients needing a laser eye surgery are eligible for femto-LASIK. Only 5% are subjected to a LASEK or PRK surgery. The main element an eye specialist takes into consideration for a laser eye surgery is the thickness of the cornea. Preoperative assessment can also be used to determine the most adequate procedure. Since the emergence of femtosecond laser, eye specialists have been able to use thinner flaps when performing femto-LASIK. As such, the surgeon can extend the correction margin.