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| What Physics Did These Articles Teach Me? | ||||||||||||||||||||||||||||||||
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| Generally speaking, theses articles provided basic background information about common vision problems and introduced the concept of using of using lasers to reshape the eye to correct these errors. Also we were introduced to the new and improving technology being used to not only correct what are known as lower order abberations which include nearsightedness, farsightedness, and astigmatism, but also higher order abberations which are vision problems such as poor night vision, contrast sensitivity, and halos around light sources. | ||||||||||||||||||||||||||||||||
| "Why Settle for 20/20?" | ||||||||||||||||||||||||||||||||
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| This article introduced us to the concept that the eye is simply a type of lens that operates in a similar way to other lenses in the physics world. Distortions in the shape of the lens cause common vision problems including nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. Therefore, laser eye surgery is used to correct errors in the shape of the cornea and eliminate the need for a person to wear contacts or eyeglasses. One additional physics concept that was introduced in this article was Wavefront technology, which helps to customize the procedures of LASIK surgery by creating a wavefront map that is programmed into the LASIK device, thereby enabling surgeons to have greater success in eliminating higher order abberations. For better understanding of the benefits and processes of wavefront technology, click below http://www.ladarvision.com/ladarvision/our_wavefront_flash.asp |
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| "History of Laser Surgery" | ||||||||||||||||||||||||||||||||
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| The evolution or refractive eye surgery is discussed in this article. The purpose of refractive surgery is to correct the vision errors that occur in the eye as a result of a misshapen cornea. Radial Keratotomy uses incisions to flatten the central cornea. Photorefractive keratecomy uses a laser to remove corneal tissue in order to correct refractive errors. LASIK surgery evolved from Photorefractive keratecomy and also uses lasers. An excimer laser is a computerized instrument that uses invisible ultra-violet light to remove corneal tissue. Earlier excimer lasers used a borad beam (6mm), while newer excimer lasers use a narrower beam (2mm). | ||||||||||||||||||||||||||||||||
| "Femtosecond Laser Minimizes Wavefront Distortions" | ||||||||||||||||||||||||||||||||
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| When using lasers to correct vision abberations, a more precise laser inevitably produces improved results. In this article we learn that using the femtosecond laser, whose waves have a smaller amplitude than the previously used technology, produces smaller wavefront distortions. | ||||||||||||||||||||||||||||||||
| "InView, Formerly Emory Vision, Releases Five-Year Data on LASIK Surgery; Findings Demonstrate Long-Term Results of LASIK | ||||||||||||||||||||||||||||||||
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| The article I chose to research contained facts about a survery done by Inview, the leader in LASIK eye surgery in America. They had about 300 test patients have LASIK surgery and then they gave them a survery about how efficient it was. For the most part, everyone was happy with the results and lack of side effects. Five years later, they sent out the same survey. Although only about half of the patients participated, the results were just as good and 95% of the people said they were satisfied or highly satisfied. Post-operative symptoms such as halos, glares, and ghost images went down alot through time as well. This shows that LASIK is a permanent solution to vision problems and should be utilized by more people. | ||||||||||||||||||||||||||||||||
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