27. September 2010 12:46
The refraction of the light is based on the cornea and retina of the eyes. Refractive errors could be caused because of the unusual shape of the cornea and the eye due to which the image in the retina appears to be blurred or distorted. There are usually three types of refractive errors that can be observed in an eye: myopia or nearsightedness, hyperopia or farsightedness and astigmatism. In Myopia, the individual has difficulty with seeing the distant objects. In hyperopia, the individual faces difficulty with seeing the near objects. In astigmatism, the image on the retina is distorted because of the irregularities in the cornea and lens of the eye. Most of the people prefer to wear glasses or contact lenses to cope up with the eye’s imperfections. However, some of them also go for Lasik surgery. Lasik surgery is one type of refractive surgery used for correcting myopia, hyperopia, and astigmatism. Lasik could be compared with the similar sort of surgical procedures such as PRK or Photorefractive Keratectomy.
Lasik surgery can not be performed on all the individuals. For the Lasik surgery, the patient should be at least 18 years of age and should have a sound health conditions. The Lasik surgery is done in an anesthetic eye in three steps. During the surgery, a flap of the corneal tissue is created, post which laser ray is applied which remodel the cornea underneath the flap and finally the flap is repositioned. Before the operation, the patients who wear contact lenses are advised not to wear them 6 weeks prior to the operation date.
The Lasik surgery helps to get rid of glasses, however, in some cases, the complications could develop. Some of the common complications that could develop after the surgery are dry eyes, vitamin D deficiency, light sensitivity, double vision, ghost images, Macular hole, epithelium erosion and floaters. However, in some cases, post operation, patients may develop subconjunctival hemorrhage (blot clot in the eye), debris formation under the flap and wrinkles in flap.
It is very important that before you decide for Lasik surgery, check if your eyes are really suitable for this and consult your doctor or eye surgeon at the earliest.
For more information on how to keep your eyes healthy, please visit us at Killeen Eyecare Center.
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