Currently, refractive errors such as myopia, hyperopia and astigmatism are so common that many people are suffering these vision problems. These three conditions have something in common that they are associated with irregular shape or profile of the cornea. In order to treat these vision problems, the right way is to correct the abnormal cornea shape or profile. In detail, astigmatism correction is to set the shape of the cornea to the appropriate appearance. And the way to treat nearsightedness or farsightedness is to change the corneal curvatures.
Commonly seen eyeglasses and contact lenses do not actually correct these vision problems. They only offer a compromise. A true solution that corrects or treats vision problems is called “Laser-Assisted In Situ Keratomileusis” or LAISK in short. This way also treats the clear that covers the front of the eyes. But it offers a permanent solution. As early as 1950, a Spanish ophthalmologist named Jose Barraquer first exploited the preliminary process of micro-keratome which could bring about microscopic slits onto the cornea. This process known as keratomileusis is now widely used to change the contours of the cornea.
Present now, LASIK surgery has been quite popular because of both its permanent vision correction and other advantages. In general, negative factors associated with LASIK surgery are much less than its positive aspects. Two of the most significant advantages of LASIK are effectiveness and high success rate. In most cases, patients who have received LASIK procedure can restore their normal vision within 24 hours. The postoperative care requires no stitches and bandages. Patients are only required to have enough rest during the first one or two days.
It is the time to describe certain negative factors of LASIK procedure. In rare cases, blurriness, halos, and dry eyes occur after the surgery. However, these side effects or complications are very rare. There are still some eye drops and medications that can be used to deal with these conditions.
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