This method involves the use of laser to change the shape of the cornea permanently. It reshapes the focusing system of the eye allowing you to see clearly without the need of eyeglasses or contact lenses.
LASIK is usually performed on corneas' whose thickness is more than 500 micro millimeters. Therefore, it's not suitable for people with cone-shaped corneas, rather spherically shaped. It's also not recommended for persons whose refractive errors (e.g. astigmatism, myopia, hypertropia and keratoconus) has been changing frequently over the past year. Generally one should: be at least 18 years old, not have certain diseases of the cornea and retina such as dry eye disease, and can be in good health.
LASIK Eye Surgery Procedure
LASIK is a quick procedure that takes about 10 minutes and does not need hospital admission. The eye specialist will first carry out a series of eye examinations to determine: If your eyes are fit to undergo LASIK, the kind os correction needed, and how much laser surgery is required.
Prior to the actual surgery, a mild oral sedative may be given. LASIK is adelicate procedure and should be performed by a skilled surgeon with proper equipment. Numbing eye drops are applied to the eyes so there is no discomfort during the procedure.
Once the eye is positioned under the laser, a very thin flap on the cornea is cut and lifted. Laser is applied as a scattered beam on the surface of the cornea for about 20 seconds, and then the area is dried out and the flap placed back in position where it bonds securely. No stitching is required. This procedure reduces the thickness of the cornea, which helps correct the refractive errors.
You will then rest for a while after the procedure and you may go home. There are no injections or bandages; but you'll use eye drops for a minimum of six weeks after the surgery. Allow about two to four hours for the entire process.
LASIK Eye Correction Pros and Cons
- It's safe and effective
- Visual recovery is rapid and relatively painless
- It is customized and individualized according to a patient's need
- Most people will achieve fairly good vision after the procedure
- It is an invasive surgical procedure i.e. it involves creating a break or incision in the skin.
- There's a possibility of not attaining the desired outcome. Sometimes, you may need glasses or contact lenses following surgery, though the prescription level will be much lower than before.
- It does not correct presbyopia (a condition where the eye lens loses flexibility as we age, resulting in long sight). Persons above the age of 40 will still need glasses for reading even after undergoing LASIK.