by kelsey matthews. history lasik stands for laser in situ keratomileusis developed in 1991 by a...
TRANSCRIPT
By Kelsey Matthews
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
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
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
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
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
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
Future
Be able to treat higher prescriptions of refractive error
Eliminate the possibility of taking out excessive corneal tissue
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.