subject: LASIK surgery overview [print this page] LASIK surgery overview LASIK surgery overview
Laser In-Situ Keratomileusis (LASIK) is one of the laser eye surgeries for permanent vision correction. First approved by FDA in 1992, LASIK has undergone a long history. This surgery is received by millions of folks in America every year. This laser eye surgery is very safe and can always offer good results.
Currently there are various types of laser eye surgery used to cure myopia, hyperopia and astigmatism. LASIK is quite widespread among all the types. As the name reflects, all kinds of laser eye surgery use laser to reshape the cornea, which enables the cornea to restore its normal ability to focus light properly on the retina.
But LASIK is unique in one aspect that the surgery cuts a thin flap on the cornea. This feature can not be seen in any other laser eye surgery. The corneal tissues under the flap will be repaired during a LASIK surgery. The excimer laser used by LASIK surgery is the same as other procedures.
There are some necessary preparations before LASIK surgery. The patients will be required to stop wearing contact lenses before one to three weeks of the procedure. Contact lenses can slightly change the cornea shape. Several days or only a couple of hours before the surgery, the surgeon should measure irregularities and astigmatism of a patient using a laser. Then a topographic map can be achieved, which offers guiding information during the surgery. These preparations can not be eliminated or neglected.
Right before the surgery, the patient will be administered with some sedatives such as anesthetic eye drops and Valium. LASIK surgery only takes several minutes, during which the patient should stay conscious and alert. After the LASIK surgery, the surgeon will prescribe some eye drops, in order to prevent infection and inflammation in the patient. Some instructions from the surgeon are also useful for proper care and recovery.
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