Lasik surgery involves the reshaping of the cornea – the thin, transparent tissue covering the iris – or colored section – of your eye. The lens of the eye – which sits right behind the iris refracts – or bends – light rays so that they are seen by the retina – located in the back of the eye. The retina's job is to then take these light rays and covert them to messages that can be understood by our brain’s optic nerve.
If you understand this process then you can understand that if our eyes suffer refractive difficulties, the light is not bent properly to the retina and the image that our brain receives is blurry. When we wear eyeglasses or contact lenses, the light is brought closer to the lens or sent directly to the retina. Lasik surgery uses laser technology to reshape the cornea so that light is refracted clearly.
During a Lasik surgery procedure, the patient is normally first given anesthetic eye drops to help numb the eye and minimize discomfort after which a speculum is placed on the upper and lower eyelids to prevent blinking. The eye is then immobilized using a corneal suction ring. After the eye is immobilized, a thin incision is made in the top layer of the corneal tissue, making a very thin flap in the tissue. When the flap is folded over, the second layer of the cornea – the stroma – is revealed.
Laser power is then used to resurface this part of the cornea. Such resurfacing is done based on what specific issues are apparent in your particular eye; information that is normally gathered during pre-surgical visits. After the reshaping, the flap is repositioned over the eye; healing takes place naturally and often very quickly.
Lasik surgery is a relatively quick procedure – usually completed in less than 20 minutes for both eyes – and most patients report that it is virtually painless; while it can be mildly uncomfortable at times. While vision may be blurry for up to a day following surgery, most people report clear vision after this time.
Lasik surgery, while popular, is not for everyone. In fact, a pre-surgical examination is imperative to determine if you are a good candidate for Lasik. Surgeons who perform Lasik normally look for at least six months of prescription stability in patients – meaning that your eyeglass or contact lenses prescription has remained the same.
In addition, refractive difficulties should fall under the appropriate guidelines for Lasik correction for the best chance of success. The doctor will also want to ensure that you are in good overall health.
http://www.TheLasikZone.com brings you the latest on Lasik. Lasik is very popular, and we want to bring you the most up to date information online! Be sure to check out our latest information page on Lasik surgery.
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