LASIK (Laser Vision Correction)
With the LASIK procedure a thin protective flap of corneal tissue is gently folded back.
If treating nearsightedness, the excimer laser removes tissue from the center of the cornea making it flatter and reducing its focusing power. This moves the point of focus in front of the retina, to on the retina.
If treating farsightedness, the corneal is made steeper as the laser removes tissue from the outer margins of the cornea. This helps the cornea bend light more, moving the point of focus somewhere behind the retina, to on the retina.
If treating astigmatism, the laser removes tissue from the steeper meridian thereby making the cornea more spherical. This allows all the light images to focus on the retina.
The protective flap is then folded back in place where it bonds without the need for stitches.