LASIK (laser-assisted in situ keratomileusis
) is a type of refractive laser eye surgery
performed by ophthalmologists for correcting myopia, hyperopia, and astigmatism
. The operation is performed by creating a thin flap on the eye, folding it to enable remodeling of the tissue underneath with laser. The flap is repositioned and the eye is left to heal in the postoperative period. Contact lens
users should avoid using it for 5-7days prior to the surgery. Low-power lasers, a topographer creates a topographic map of the cornea. This process also detects astigmatism and other irregularities in the shape of the cornea. This helps the surgeon calculates the amount and locations of corneal tissue to be removed during the operation. Lasik is performed in 3 stages 1) Create a flap of corneal tissue. 2) Remodeling of the cornea underneath the flap with laser. 3) The flap is repositioned. Postoperative care would include a) Antibiotics & Anti inflammatory eye drops. b) Darkened pair of shields to protect their eyes from bright lights and protective goggles to prevent rubbing of the eyes when asleep and to reduce dry eyes. c) Moisturize the eyes with preservative free tears. Complications of Lasik surgery would include 1) Surgery induced dry eyes. 2) Over correction or under correction. 3) Visual acuity fluctuation 4) Halos or starbursts around light sources at night 5) Light sensitivity 6) Ghost images or double vision
7) Wrinkles in flap (striae) 8) Debris or growth under flap 9) Induced astigmatism 10) Corneal Ectasia 11) Floaters 12) Epithelium erosion 13) Posterior vitreous detachment
0.36 percent. 14) Macular hole
0.2 percent to 0.3 percent.