What is LASIK?
LASIK is a laser vision correction procedure that reshapes the cornea to correct refractive errors. During the surgery, a thin flap is created on the surface of the cornea and gently lifted. An Excimer Laser is then applied to the middle layer of the cornea to reshape its curvature according to the patient’s refractive error. The corneal flap is then repositioned without the need for stitches, allowing it to naturally adhere and heal on its own.ิ
In earlier generations of LASIK, the corneal flap was created using a Microkeratome (a mechanical blade). Today, most modern centers—including ours—use Femtosecond Laser technology to create the flap. This technique, known as Femto-LASIK, provides greater precision, smoother cuts, and enhanced safety compared to the traditional blade method.
LASIK Procedure (LASIK or Femto-LASIK)
Step 1: Corneal Flap Creation After administering anesthetic and antiseptic eye drops, the ophthalmologist begins by creating a corneal flap in each eye. A femtosecond laser is used to separate the corneal layers at a predetermined depth with high accuracy.
Step 2: Lifting the Flap (Femto-LASIK) The flap is gently lifted to expose the underlying corneal tissue in preparation for Excimer Laser treatment.
Step 3: Excimer Laser Reshaping The Excimer Laser is applied to reshape the curvature of the cornea according to the patient’s prescription. This is the most critical step of the procedure. The patient must look straight ahead and remain as still as possible. Modern laser systems feature fast eye-tracking technology, but patient cooperation remains important.
Step 4: Repositioning the Flap The corneal flap is then placed back into its original position. Within approximately 3 minutes, the flap naturally adheres to the cornea without the need for sutures. Before the patient goes home, a protective eye shield is placed to prevent accidental rubbing.
Who Is Suitable for LASIK?
LASIK may be suitable for individuals who:- Prefer not to wear glasses or contact lenses due to appearance concerns, discomfort, or eye irritation from prolonged contact lens use
- Engage in sports or activities where glasses or contact lenses are inconvenient (e.g., swimming, diving, long-distance running)
- Work in professions where glasses are not permitted or practical, such as flight attendants or pilots, where long contact lens use may increase the risk of infectioืืn
Benefits of LASIK
The primary goal of LASIK—for both patients and surgeons—is to achieve complete and permanent correction of nearsightedness or astigmatism, allowing patients to live free from glasses or contact lenses. In some cases, while perfect correction may not always be achieved, the procedure can significantly reduce the degree of refractive error, minimizing the dependency on glasses or contact lenses.
Improved vision can lead to various enhancements in daily life, such as: Increased career opportunities Greater self-confidence Ability to apply makeup without glasses obstructing the face Freedom to enjoy activities such as swimming, diving, or traveling without the inconvenience of carrying contact lens cleaning supplies