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Lasik eye surgery

By Kelsey Matthews. Lasik eye surgery. 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. Refractive Errors.

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Lasik eye surgery

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  1. By Kelsey Matthews Lasik eye surgery

  2. 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

  3. 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

  4. 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 patient’s specific prescription

  5. 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

  6. 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

  7. 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

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

  9. Works Cited • Segre, Liz. The LASIK Procedure: A Complete Guide. All About Vision < http://www.allaboutvision.com/visionsurgery/lasik.htm>. • Randleman, J. Bradley, MD. LASIK Eye Surgery. <http://www.medicinenet.com/lasik_eye_surgery/article.htm>. • 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. <http://bicep0.caltech.edu/~ebierman/sdarticle.pdf> • Melki S, Azar D. LASIK Complications: Etiology, Management, and Prevention. Survey of Ophthalmology vol. 46, issue 2, pp. 95-116.

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