Health  »  Vision

How Laser Eye Surgery Works


By: PhilBelfast PhilBelfast.   
Date Added : July 26, 2011 Views : 20
Laser eye surgery is a procedure used to correct vision for people suffering from shortsightedness, long-sightedness, astigmatism and cataracts. During the eye surgery, a microscopic instrument is used to cut a thin flap in the cornea. The cornea is a convex shaped transparent window that covers the front part of the eye. Light that goes inside the eye is refracted through the cornea to provide accurate vision. An analogy of the cornea is the lens of a watch that enables people to see time clearly. The cornea lacks blood vessels thus making it very clear and transparent. In adults, it’s about a half millimeter thick with five layers.

During laser eye surgery, a thin layer of the cornea is excised and then the inside of the cornea is shaped to the desired focus. Once the reshaping is done, the flap is put back into place and that marks the end of the operation. An advantage associated with laser eye surgery is the fact that it is known to correct vision with more than 85% of patients noticing improvements. The surgery process is also associated with very little pain and there are no bandages or stitches that are used. Most patients will notice corrected vision within 24-48 hours and after the operation there is usually no need to wear contact lenses or glasses. With laser eye surgery, further enhancements can always be made to correct vision on top of the prior operations.

Before one goes for laser eye surgery, a few preparations should be taken. First and foremost one needs to visit a qualified laser eye surgeon to discuss the procedure. A medical history and a variety of eye tests are supposed to be run. Some of the eye evaluation tests include investigating pupil dilation, measuring the thickness and mapping of the cornea, corneal refraction and air pressure. One should feel free to discuss anything with the eye surgeon and thereafter an appointment can be given for the operation. Rigid gas permeable contact lenses should not be worn at least three weeks before a surgery is done. Any other types of contact lenses shouldn’t be worn at least four days before laser eye surgery.

Laser eye surgery cost usually prevents many patients from going for the procedure. There is now hope for those who cannot afford full payment at once as there are new options available. One can pay half the cost upfront and the remainder is spread out over one year after the surgery. This kind of surgery is not usually covered by health insurance, but patients can claim some medical tax exemptions if they undergo the procedure.

Most patients of laser eye surgery Belfast surgeons usually notice immense improvement in vision after surgery. However, a good number experience a condition called dry eyes. It is brought about by the eye not being able to lubricate its surface well. Eye drops available in pharmacies such as cyclosporine can be used because they help the eye form tears. They also help in aiding quick recovery of the eye after surgery. Laser eye surgery Derry surgeons also recommend the use of omega 3 fats in such situations.




Phillip McGlade is the author of this article on Laser Eye Surgery. Find more information on Eye Surgery Derry here.




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