Since the discovery of the laser much progress his application was lodged. Particularly noteworthy is the use of laser medicine in the clear. Laser could in various types of operations are principally used for correcting eye vision. Laser vision correction has begun at this time when the excimer laser was first discovered in 1950.
Visual Impairment and refractive errors such as myopia (nearsightedness)Hyperopia (farsightedness) and astigmatism (distorted vision) process could be corrected with laser surgery. These problems are associated with retina as the eyes focus images on light-sensitive part on the back of the eye. Also an important factor in the eyes ability to focus on the shape of the cornea, the clear front surface of the eye.
laser eye surgery, a laser device is used to make changes in the formContour of the cornea. An excimer laser is often used for this process, this creates an ultra violet light, which vaporizes the tissue is undesirable. This procedure would change the contour and shape of the cornea to correct most mild to moderate refractive errors.
The most common laser eye procedures are keratectomy, PRK (Photo Refractive), LASIK (laser assisted situ keratectomy), recently developed LASEK (laser epithelial keratomileusis) andthe Epi-LASIK.
In PRK, the doctor removes the outer layer of the cornea (epithelium) with a surgical blade. A computer guided laser is then used to cut and vaporize the corneal tissue. Remove the tissue of the cornea is usually just enough so a better vision again. healing process for this type of procedure is usually a 5 days to 1 week.
LASIK involves making a flap in the cornea with a blade or a laser, this procedure is well known thatmuch more complicated and difficult. Then a laser is used to evaporate within the corneal tissue, this vision is to improve its shape, which lead to good. Once the tissue enough to be removed, the flaps return to its original position. cure in this case faster than PRK.
Recent developments lead to LASIK using wavefront technology that could produce a detailed topographic map of the eye. With this information, surgeons were able to accuratelyCorrect the vision of the eye.
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