o The Frog Blog: What is Laser Eye Surgery

Wednesday, 4 February 2009

What is Laser Eye Surgery

Laser Eye Surgery is a procedure that can reduce a person's dependency on glasses or contact lenses. The procedure permanently changes the shape of the cornea (the delicate clear covering on the front of the eye). For clear vision, the eye's cornea and lens must bend (refract) light rays properly, so that images are focused on the retina. If the light rays aren't clearly focused on the retina, the images you see are blurry. This blurriness is referred to as a "refractive error." It is caused by an imperfectly shaped eyeball, cornea, or lens. Laser Eye Surgey uses an ultraviolet laser to precisely remove corneal tissue to correct the shape for better focusing.
Laser Eye Surgery is performed most often on people who are short sighted (myopic), which means that they only see nearby objects clearly; anything far away is blurry. Below is a You Tube Video showing an eye undergoing the surgery. It's not pretty, but very interesting. Thanks to Rebecca Stewart for recommending this to me.


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