Tuesday 15 December 2009

Lasik Laser

The refractive state of your eye can be improved and you can decrease the need for wearing glasses through Refractive Eye Surgery. The most common method of surgery followed today is Laser surgery, where lasers are used to reshape the cornea. Laser surgery is the greatest achievement in ophthalmology. Lasers are usually used to treat non refractive conditions.

http://blogs.webmd.com/eye-on-vision/uploaded_images/lasik_blog-711690.jpg

What is LASIK?

LASIK is one of the most popular types of laser eye surgery. LASIK stands for Laser-Assisted In Situ Keratomileusis. This procedure can permanently reshape the cornea, which is the clear covering of the front of the eye, and change its focus power using an excimer laser. Millions of patients have been treated using LASIK, using of a wide variety of different lasers. This procedure can be used to correct myopia, hyperopia and astigmatism.

http://www.eyeglasses-butler-optometrists.com/images/LASIK%20flap.jpg

Prior to the surgery:

Before you undergo LASIK surgery you will have to get your eyes examined by a doctor to see if you are a good candidate. If you wear contact lenses, you will have to stop using them for 1 to 4 weeks before the surgery and switch to wearing your glasses, to allow the cornea to return to its original shape, or else this can have negative consequences like inaccurate measurements and a poor surgical plan; resulting in poor vision after surgery. These measurements would decide how much corneal tissue is to be removed, and have to be repeated a week after your first evaluation as well as before surgery, to see that the measurements have not changed.

http://scienceblogs.com/cognitivedaily/upload/2006/07/lasik.jpg

It is important that you tell your doctor all about your past and present medical eye conditions, and also the medications you are taking or if you are allergic to any medicines. Then on the day of the surgery you will be given a numbing drop so that you do not feel pain, although some patients do experience some discomfort. The area around your eye will be cleaned and a lid speculum will be used, which is an instrument to hold your eyelids open. A suction ring will be placed on your eye and suction will be created by applying very high pressure to the cornea. As a result of this, your vision will dim and the pressure may cause some discomfort.

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