How does laser vision correction work?
Laser vision correction is a form of laser surgery performed to correct vision problems such as foresight, nearsightedness and astigmatism. During the procedure, he uses a specially trained ophthalmologist Laser to transform the cornea of the eye. If you want to be a candidate for correction of laser vision, you must have at least 18 years of age, have good health and no eye diseases such as cataracts or optical nerve diseases. The patient then lies with one eye located directly below the laser device. During the procedure, the eyelids are open and the eye is a button to allow the doctor to make the desired cuts more easily. This is not usually unpleasant, because anesthetic drops used for blunt eyes.
Only one eye is operated at the same time, even if both can be done on the same day if they desire. The first cut is the one that creates a small valve from the corneal surface. This can be done using an accurate tool called microcheratom or laser. The circular valve is finely foldedAnd from the path that the doctor uses a laser to remove small amounts of corneal tissue in a process known as ablation.
The laser itself is a concentrated beam of cold ultraviolet light. It is accurate enough to cut notches in one strand of hair without breaking it. Each laser impulse removes 39 million inches (99 million centimeters) of corneal tissue worth 12 billion. After the required repairs, the flap is laid back to the place and covers the area where the tissue has been removed.
When the cornea is transformed in the right way, it will be able to focus light directly on the retina without a district, ideally solve bad vision. Laser vision correction usually takes only about five minutes. It is best for the patient to bring someone to take him home because for recovery an eye is required for several days of rest. Many people immediately notice an improved vision while the vision of others do not over the days of the daysBO of weeks improves.
It is possible that the correction of laser vision will not provide a perfectly clear vision to the patient. In these cases, any problems are usually very mild, but several of them experience significant side effects. Laser vision correction is involved in the risk, as with any operation, and a thorough consultation with a eye care expert is the best way to find out whether you are a candidate for the procedure.