(HealthDay News) --People who have poor vision and want to ditch the glasses or contact lenses may want to consider the vision-correction surgery known as LASIK.

LASIK focuses on the cornea, the part of the eye that helps focus light to create an image on the retina. According to the U.S. Food and Drug Administration, LASIK works in much the same way that the lens of a camera focuses light to create an image on film. The bending and focusing of light is also known as refraction. Usually the shapes of the cornea and the eye aren't perfect, and the image on the retina is out of focus or distorted.

In LASIK surgery, precise removal of corneal tissue by a special laser reshapes the cornea and changes its focusing power. As with any surgical procedure, it's always good to seek at least two opinions.

Some LASIK risks include the loss of vision; debilitating visual symptoms including glare, halos and/or double vision; being under treated or over treated, requiring glasses or contact lenses after surgery, and severe dry-eye syndrome.