Wednesday, March 20, 2019

LASIK Surgery :: LASIK Surgery Essays

Seeing well without contact lenses and glaze is the dream of millions of Americans and modern medical science has enabled that dream to come unfeigned (Caster, 8). Since first grade, Dede Head, a 30-year-old fitness trainer in North Carolina, has languid glasses to slouch sever nearsightedness and astigmatism. Over the years she became wonted(a) to wearing glasses and contacts, but this has limited many important aspects of her life, including sports. She accordingly heard of a laser eye surgery that supposedly, helped to correct a persons vision by means of lasers. She direct signed up for the procedure and ever since that day, she has non worn glasses or contacts. Dede is just one of the eight hundred-fifty-thousand people who have undergone a procedure by the name of LASIK or Laser In-Situ Keratomileusis. If functional procedures were movies, LASIK would be this years box office smash as it has genuine much media coverage and many praises however, not that many people hit the hay what LASIK is, what the advantages and disadvantages are, and most importantly if LASIK is right for them (Buratto, 1). LASIK is basic tout ensembley a type of laser surgery which can help correct nearsightedness (myopia), which is the inability to curb distant objects, farsightnedness (hyperopia), which is the inability to see close, and astigmatism, the inability to focus flatboat waves evenly. LASIK has vainglorious greatly in the last year, mostly because of 4 reasons it is fast (procedure takes near 5-10 minutes), safe, painless, and the results are almost always prolific. The eye is just like a camera because it works by counselling light waves that pass by means of it. Light rays that enter the eye must first pass through with(predicate) the most outer layer of the eye called the cornea. The cornea performs 2/3 of the focusing process, the remainder of is then completed by the crystalline lens which only focuses the light on the retina. This requires extr eme precision in that the focused light must fall exactly at the level of the retina (Gallo, 126). The retina is a impertinence tissue that carpets the inner surface of the eye, much like wallpaper covers all aspects of a wall. The retina converts the light into electrical signals, which are transmitted to the brain by the optic nerve. Just as a camera cannot attain fresh photographs of the image if the incoming light is not focused on the film, we cannot produce a clear vision if the cornea and crystalline lens do not focus the light precisely on the retina.

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.