Lasik eye surgery

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Lasik eye surgery

• By Kelsey Matthews

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History

• LASIK stands for laser in situ keratomileusis
• Developed in 1991 by a greek doctor Ioannis
  Pallikaris
• Purpose to correct refractive error myopia,
  hyperopia, astigmatism

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Refractive Errors

• The lens and cornea of the eye focus light rays
  onto the retina
• For images to be clear and focused, the cornea
  and the lens match the length of the eye
• A mismatch causes a refractive error and blurred
  images

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How LASIK works

• The surgeon first creates a corneal flap 83-200
  micrometers thick with a surgical instrument
  called a microkeratome
• A computer is used to set an excimer laser to the
  patients specific prescription

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How LASIK works cont.

• Patient is asked to stare at a target line while
  the laser sends pulses of light that reshape the
  cornea
• Corneal tissue is finely vaporized to the shape
  desired by the surgeon
• Flap is placed back on eye and adheres naturally

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Advantages

• Overall patient satisfaction- about 95
• Majority of patients have vision reach 20/40
• Quick outpatient procedure-about 10 minutes
• Quick recovery time-a few days rest, no eye
  rubbing

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Disadvantages

• Not covered by insurance- cost can range from
  1,500-3,500 per eye
• LASIK is not for everyone-an evaluation must be
  done, not for especially high prescriptions
• Infections and dry eye can occur
• Eyes can be over or under corrected
• Regression can still occur with age

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Future

• Be able to treat higher prescriptions of
  refractive error
• Eliminate the possibility of taking out excessive
  corneal tissue

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Works Cited

• Segre, Liz. The LASIK Procedure A Complete
  Guide. All About Vision lt http//www.allaboutvisio
  n.com/visionsurgery/lasik.htmgt.
• Randleman, J. Bradley, MD. LASIK Eye Surgery.
  lthttp//www.medicinenet.com/lasik_eye_surgery/arti
  cle.htmgt.
• Marcos, Susana. 2001 December. Optical Response
  to LASIK Surgery for Myopia from Total and
  Corneal Aberration Measurements. IOVS Journal
  vol. 42 no. 13.
• Sahkimoto T, Rosenblatt M, Azar D. Laser eye
  surgery for refractive errors. 7 March 2006.
  lthttp//bicep0.caltech.edu/ebierman/sdarticle.pdf
  gt
• Melki S, Azar D. LASIK Complications Etiology,
  Management, and Prevention. Survey of
  Ophthalmology vol. 46, issue 2, pp. 95-116.