How is LASIK surgery performed?
The entire LASIK surgery takes under 30 minutes. The surgeon first applies anesthetic drops to the eye, then uses a laser or surgical instrument to create a protective flap. This flap is gently lifted as the surgeon applies computer-controlled pulses of cool laser light to the inner layers of the cornea. The surgeon uses the laser to reshape the inner corneal layer according to the patient's unique vision needs and customized eye "map."
|Tissue is removed from the center of the cornea to flatten it. This moves the point of focus from in front of the retina to directly on the retina.|
|Tissue is removed from outside of the central optical zone of the cornea to make the flat cornea steeper. This moves the point of focus from behind the retina to directly on the retina.|
|Astigmatism||The cornea is made more spherical—like a basketball instead of a football. This creates one point of focus on the retina, eliminating multiple focusing points within the eye. Astigmatism can be treated at the same time as nearsightedness and farsightedness.|
Some patients may feel slight irritation for a few hours following the procedure, but most are quite comfortable after a nap and rest. Most patients will experience a 50 percent improvement by the evening, a 70 percent improvement by the next day, and can return to regular daily activity within 24 hours.
Most patients should continue to see improvements as their eyes heal and adjust to their new shape, with fully restored vision in one to four days.