Thursday, March 25, 2010
What is LASIK?
The eye and vision errors
The cornea is a part of the eye that helps focus light to create an image on the retina. It 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 shape of the cornea and the eye are not perfect and the image on the retina is out-of-focus (blurred) or distorted. These imperfections in the focusing power of the eye are called refractive errors. There are three primary types of refractive errors: myopia, hyperopia and astigmatism. Persons with myopia, or nearsightedness, have more difficulty seeing distant objects as clearly as near objects. Persons with hyperopia, or farsightedness, have more difficulty seeing near objects as clearly as distant objects. Astigmatism is a distortion of the image on the retina caused by irregularities in the cornea or lens of the eye. Combinations of myopia and astigmatism or hyperopia and astigmatism are common. Glasses or contact lenses are designed to compensate for the eye's imperfections. Surgical procedures aimed at improving the focusing power of the eye are called refractive surgery. In LASIK surgery, precise and controlled removal of corneal tissue by a special laser reshapes the cornea changing its focusing power. Dr. Boothe Laser Center
LASIK is a surgical procedure intended to reduce a person's dependency on glasses or contact lenses. The goal of this Web site is to provide objective information to the public about LASIK surgery. See other sections of this site to learn about what you should know before surgery, what will happen during the surgery, and what you should expect after surgery. There is a glossary of terms and a checklist of issues for you to consider, practices to follow, and questions to ask your doctor before undergoing LASIK surgery.
Boothe Eye Center: Nearsighted, Myopia:
People can typically see things up close, but things far away may appear blurred. People who are nearsighted may find a negative number in the sphere column of their prescription.
LASEK- Or epi-LASIK, may be a Laser Eye Surgery option for patients with thinner corneal epithelia. A solution is used to raise the epithelium. A "bubble" forms through the center of the microkeratome, making it safe to create a flap. After the laser application, the flap is repositioned on the cornea and held in place by a soft, non-prescription contact lens.
Boothe Laser Center
Farsightedness- Farsightedness is another name for Hyperopia or Hypermetropia. Many Farsighted patients have difficulty seeing things up close, and often have crisp-acute distance vision.
Dr. Boothe Eye Center
LASIK- LASIK is an acronym that allows us to quickly say, "laser assisted in situ keratomileusis." This is more simply said as "reshaping the cornea using a laser."
More realated results:
Boothe Eye Care ~ Dr. Boothe ~ Dr. Boothe Eye Center