LASIK allows people to perform most of their everyday activities without wearing any corrective lenses. If your vision is fully corrected with LASIK, you will need to wear glasses in your 40s or 50s due to presbyopia. But if you are interested in correcting your presbyopia and reduce the dependence upon the eye glasses, you can try the strategy known as monovision. This technique corrects your vision to allow for near vision in one eye and distance vision in the other eye. Some patients respond so positively to monovision demonstration with trial frames during preoperative evaluation.
It is important to discuss your lifestyle, including your work and recreational and leisure activities, with your eye surgeon before deciding to go ahead with LASIK since some work, sports and other activities are not compatible with LASIK.
LASIK is performed in an outpatient surgical setting, with the patient reclining under a surgical device called an excimer laser. Initially your eye is made numb with a few drops of topical anesthetic. An eyelid holder, called a speculum, is placed between the eyelids to keep them open and prevent you from blinking.A suction ring placed on your eye, lifts and flattens the cornea and prevents your eye from moving. You may feel pressure from the eyelid holder and suction ring.
Vision appears dim or goes black from the time suction ring is placed on your eye until it is removed. Then surgeons creates hinged flap of corneal tissue using an automated micro surgical device like laser or microkeratome blade.The corneal flap is lifted and folded back. The excimer laser that has been programmed with measurements specifically for your eye is then centered above your eye.
You will look at a special pinpoint of light that is known to be target light and the laser sculpts the exposed corneal tissue. After the laser has reshaped your cornea, the surgeon replaces the flap in position and smoothens the edges without placing any stitches.Your corneal flap will never adhere to the surface of the eye with quite the same strength it did prior to the surgery, so there is a rare risk of the flap becoming displaced with sufficient force.