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Analyze, using available data, and field research, the advantages and disadvantages of Laser technology on the human eye for visual correction of Myopia (short-sightedness), Hyperopia (long-sightedness) and Astigmatism.

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D-0666-045 AIM To analyze, using available data, and field research, the advantages and disadvantages of Laser technology on the human eye for visual correction of Myopia (short-sightedness), Hyperopia (long-sightedness) and Astigmatism. AN INTRODUCTION TO LASER EYE SURGERY Since early times humanity has sought to correct visual problems. The ancient Chinese used to sleep with small bags of mercury on their eyes, flattening their corneas and improving their shortsightedness. Unfortunately, the effects only work for a few minutes after waking! Spectacles were first used by the Arabs in the 11th century and were introduced into Europe about two hundred years later. This century has seen the development of contact lenses, initially the hard variety and later soft and disposable soft lenses. Although these optical aids allow patients to see well while wearing them, they do not offer a permanent cure for the visual disorder. Two decades ago surgical techniques were introduced to permanently correct shortsightedness and astigmatism. The radial keratotomy procedure used a diamond blade to make incisions into the cornea, the front surface or "window of the eye". Today, these Laser eye surgeries have gained tremendous importance for one can permanently get rid of the cumbersome task of wearing spectacles and lenses and normal D-0666-045 eyesight can be restored in a simple, inexpensive, ten-minute procedure which involves no cuts or incisions and is 99% safe and guaranteed. Many eminent personalities across the globe have successfully been operated on and hence laser eye surgery is getting more and more popular. THE HUMAN EYE The Normal Eye Sight is regarded by many people as the most precious of our senses and it provides more information about our environment than any of the other five senses. Sight is formed by light rays that are reflected from objects and enter the eye where they are processed and sent to the brain for interpretation. The most important parts of the eye are the sclera, cornea, iris, lens, vitreous, retina, macula and the optic nerve. ...read more.


Who is a suitable candidate for LASIK? Almost all patients with myopia, astigmatism, and hyperopia are suitable for Excimer Laser treatment. Patients with presbyopia alone cannot be treated by the Excimer Laser but may be suitable for Presby implants. During the free screening test, one can get a good idea as to whether you are a possible candidate. However, before proceeding with treatment, a full eye examination is needed to exclude any diseases and contraindications. The following tests are performed: - * How much myopia, or other refractive error, is present? * A measurement of cornea is made by computerized corneal topography * What is the thickness of your cornea? * The size of pupils in the dark is measured. * Is your refractive error stable? D-0666-045 * Personal information about allergies and other medical conditions that may effect the laser treatment will be requested. A computerized corneal topography unit being used to measure corneal curvature What are the chances of success? The decision to undergo LASIK refractive surgery seems to be based most often on a vocational or psychological reason, which makes it an elective procedure rather than a medical necessity. Primarily, the decision to have the surgery is the patient's, unless the surgeon determines that the patient, for medical or other reasons, would not be a good candidate. D-0666-045 Medical studies and scientific data may provide compelling evidence in support of having LASIK vision correction surgery performed. Nevertheless, the most convincing testimonies praising the outcomes of surgery come from the many patients who provide firsthand accounts of their successful operations that resulted in much improved vision and a better quality of life. I have read the various opinions and comments of patients who have undergone LASIK correction and on the basis of their personal experiences, it is apparent that the correction surgery is not as easy nor as successful and the rosy picture portrayed by surgeons is evidently false. ...read more.


Although there are varying opinions on LASIK and it is not possible to draw any conclusions based on the evidences, I am of the opinion that LASIK should definitely not be taken lightly. It is an established fact that although the success rate of such treatments has improved since the usage of the EXCIMER LASER over the PRK technique, the fact still remains that once the surgery fails due to any of the factors mentioned above, it is IMPOSSIBLE to restore vision or get rid of the side - effects and the patient may have to live with Headaches, blurred vision, dry eyes all throughout the life. The decision to opt for the treatment should be taken after evaluating all the pros and cons and having obtained consultations with one or more doctors. The side-effects and risks involved should not be overlooked and the corrective surgery should not be done for purely cosmetic reasons. Only if it is a necessity or a demand made by the profession should such an option be considered. However New Technologies are continuously being developed and I am positive that in the near future, we will be having a better Laser technique which promises 100% success rate and eradicates all the side effects and traumas involved with D-0666-045 failure such as headaches and blurriness. For people whose profession or career demands it, the correction treatment should be performed but for others, I would suggest - Have patience for a few months or a couple of years and you will be able to say GOODBYE to your Glasses and contact lenses and also have guaranteed 20/20 vision restored. 1 Surgical Eyes - http://www.surgicaleyes.org - Patient Stories 2 Surgical Eyes - http://www.surgicaleyes.org - Patient Stories 3 Eye World Medical Journal Published in USA, Issue date May 2002 - Article on LASIK disasters 4 Eye World Medical Journal Published in USA, Issue date May 2002 - Article on LASIK disasters 5 LASIK at Drayton House Clinic - Patient Testimonials - http://www.draytonhouseclinic.com 6 LASIK at Drayton House Clinic - Patient Testimonials - http://www.draytonhouseclinic.com 1 ...read more.

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