LASIK or Laser Assisted In- Situ Keratomileusis is a type of refractive surgery in which lasers are used to reshape the cornea and correct near sightedness, far sightedness or astigmatism.
SMILE is a type of Refractive Lenticule Extraction (ReLEx) procedure. SMILE or Small Incision Lenticule Extraction is a modification of the ReLEx FLEx method. ReLEx is a new generation laser vision correction method in which a femto second laser (a specialized laser) is used. It is performed using the Visumax machine.
How SMILE surgery is performed:
The Visumax machine makes a small cut in the cornea which measures less than 4 mm in length. Along with this, a lenticule or a disc shaped tissue of the cornea is created in the same step. The lenticule thus created is then removed through the cut. After the lenticule is removed, the form of the cornea changes. This causes changes in the cornea necessary to correct the refractive error in the eye.
Advantages of the SMILE technology:
Better choice for persons with higher refraction values
80% smaller cut as compared to older techniques
Does not affect the stability of the cornea too much
Reduced severity of dry eyes after the procedure
Less chance of infections or ingrowth of tissue
Faster healing of cornea