LASIK stands for Laser-Assisted In Situ Keratomileusis and is a procedure that permanently changes the shape of the cornea, the clear covering of the front of the eye, using an excimer laser. A mechanical microkeratome (a blade device) or a laser keratome (a laser device) is used to cut a flap in the cornea. A hinge is left at one end of this flap. The flap is folded back revealing the stroma, the middle section of the cornea.
Pulses from a computer-controlled laser vaporize a portion of the stroma and the flap is replaced. There are other techniques and many new terms related to LASIK that you may hear about.
All laser vision correction surgeries work by reshaping the cornea, the clear front part of the eye, so that light traveling through it is properly focused onto the retina located in the back of the eye. LASIK is one of a number of different surgical techniques used to reshape the cornea.
Around 96% of patients will have their desired vision after LASIK. An enhancement can further increase this number. LASIK is associated with very little pain due to the numbing drops that are used. Vision is corrected nearly immediately or by the day after LASIK.
LASIK, or “laser-assisted in situ keratomileusis,” is the most commonly performed laser eye surgery to treat myopia (nearsightedness), hyperopia (farsightedness) and astigmatism.
Like other types of refractive surgery, the LASIK procedure reshapes the cornea to enable light entering the eye to be properly focused onto the retina for clearer vision. In most cases, laser eye surgery is pain-free and completed within 15 minutes for both eyes. The results — improved vision without eyeglasses or contact lenses — can usually be seen in as little as 24 hours.
During LASIK eye surgery, an instrument called a microkeratome or femtosecond laser is used to create a thin flap in the cornea. The cornea flap is then painlessly peeled back and the underlying corneal tissue is reshaped using another laser. After the cornea is reshaped so that it can properly focus light onto the retina, the cornea flap is put back in place and the surgery is complete.
LASIK is performed while the patient is under local anesthesia in the form of eye drops and usually takes about 10 minutes to complete. Patients may also request mild sedation. Plan to have someone drive you home after surgery.
Dr. Khanna provides the most sophisticated Lasik treatments and procedures in Southern California. With thousands of happy customers, and hundreds of top ratings on sites like Yelp, Dr. Khanna is trusted as the Los Angeles Lasik expert doctor.