Lasik Surgery

Lasik Surgery - Corrective Lasik Eye Surgery Lasik eye...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Corrective Lasik Eye Surgery Lasik eye surgery has become a popular surgical alternative to patients who do not wish to wear corrective eyeglasses or contact lenses. An acronym for Laser-Assisted in Situ Keratomileusis, Lasik engages refractive lasers in an eye surgery that corrects myopia, hyperopia, and astigmatism (4). Many patients who chose to undergo corrective Lasik surgery do not fully understand the procedure and complications that may result. Although Lasik is a simple procedure with beneficial results, many complications can result from surgery. Before the surgery, patients are required to discontinue the use of contact lenses. Later, low-power lasers are used to create a topographic map of the corneas. This process reveals irregularities, such as astigmatism, that are in the shape of the cornea. This information is vital to the surgeon who uses it to determine the corneal tissue that will be removed during the surgery (3). The patient is kept conscious during the operation but is usually given a sedative and anesthetic eye drops. The first procedure of the operation creates a flap on the surface of the eye. The eye is immobilized and held in place through suction as the flap is created then pulled back to reveal the stoma, or the middle of the cornea. The creation of the flap is done with a femtosecond laser microkeratome (4). The laser is then adjusted to fit the particular prescription of the patient. An excimer laser is then used to remove unwanted tissue in the cornea. Each pulse of the laser has an average power in the milliwatt range and occurs every 10-20 nanoseconds. The heavier the patient’s prescription, the longer this process with take. The surgery is then completed as the surgeon repositions the created flap. After
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/07/2008 for the course ARSC 10 taught by Professor Buxton during the Spring '08 term at Marquette.

Page1 / 3

Lasik Surgery - Corrective Lasik Eye Surgery Lasik eye...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online