![]() This feeling doesn't last for more than 6 hours in most cases. You may have burning, itching, or a feeling that something is in the eye.If your doctor thinks you're a candidate, ask about the pros and cons. In some instances, surgery on only one eye is required. This is called "monovision." If you can adjust to this correction, it may eliminate or reduce your need for reading glasses. However, LASIK can be done to allow one eye to see near and the other far. Make sure you have realistic expectations from the surgery.įor people with presbyopia, LASIK cannot correct vision so that one eye can see at both distance and near.If you're happy wearing contact lenses or glasses, you may not want to have the surgery. You should discuss this with your surgeon. LASIK may not be recommended for people with diabetes, rheumatoid arthritis, lupus, glaucoma, herpes infections of the eye, or cataracts. Your prescription must be within the range that can be corrected with LASIK.Nearsightedness may continue to increase in some people until their mid to late 20s. If you are nearsighted, you should postpone LASIK until your condition has stabilized. ![]() Your eyes must be healthy and your prescription stable.Using LASIK to correct a very nearsighted eye may prevent amblyopia (lazy eye). A rare exception is a child with one very nearsighted and one normal eye. This is because vision may continue to change in people younger than 18. You should be at least 18 years old (21 in some cases, depending on the laser used).The FDA and American Academy of Ophthalmology have developed guidelines for determining LASIK candidates. It is sometimes used to correct farsightedness. LASIK is most often done on people who use glasses or contact lenses because of nearsightedness (myopia). The cornea will naturally hold the flap in place. Once the reshaping is done, the surgeon replaces and secures the flap. A wavefront test, which measures how light travels through your eye.Your glasses or contact lens prescription.The surgeon will calculate this based on several factors including: The amount of corneal tissue the excimer laser will remove is calculated ahead of time. Now, a more common and safer method is to use a different type of laser (femtosecond) to create the corneal flap. When LASIK was first done, a special automated knife (a microkeratome) was used to cut the flap. A hinge on the flap prevents it from being completely separated from the cornea. This flap is then peeled back so that the excimer laser can reshape the corneal tissue underneath. To do the procedure, a flap of corneal tissue is created. LASIK may be done on one or both eyes during the same session. The procedure is done when you are awake, but you will get medicine to help you relax. The only anesthetic used is eye drops that numb the surface of the eye. It will take 10 to 15 minutes to perform for each eye. LASIK is an outpatient surgical procedure. ![]() This gives the cornea a new shape so that light rays are focused clearly on the retina. LASIK uses an excimer laser (an ultraviolet laser) to remove a thin layer of corneal tissue. This blurriness is referred to as a "refractive error." It is caused by a mismatch between the shape of the cornea (curvature) and the length of the eye. This allows images to be focused on the retina. ![]() For clear vision, the eye's cornea and lens must bend (refract) light rays properly. ![]()
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