| Read about Surgery Eye | |
Read about Surgery EyeIn the context of the generic term barrel the refractive surgery oogverrichtingen together the total breaking strength of the eye to change and as conventional optical corrections such as glasses or contact lenses to replace, or significantly reduce the strength of which at least. The ophthalmology has several operation methods for the correction of Ametropien, those relating to the accurate measuring, persistence and potential side effects may vary ë le. Since the 13th century, the glass used for low visibility to improve. The refractive surgery began at the beginning of the 20th century.The first clinical studies on the research of surgical methods to Model of the cornea in the 1930s began with experiments on radi. To 16 radial oriented ë geori or star-shaped cuts in the surface of the cornea should flatten them with destabilisation, and increase its radius of curvature to correct Kurzsichtigkeiten. However, this procedure met complications from scarring of the cornea. Only in 1978, radial Keratotomy applied more and more short-sighted people and mainly in the USSR and the United States with initial successes have been. At the same time, a pioneer in radi. The initially impressive successes were put in perspective by the so-called study of PERKS in the United States. This showed as well as a significant decline in the medium term the operation effect, among other things, also a poor predictability and so make sure that radial Keratotomy lost its importance. Rather than flattening to take by direct of the cornea with deep cuts to weaken, the Spaniard Jose Iganacio Barraquer the decline by the two-dimensional tissue removal within corneal layers since 1963 followed (Keratomileusis). Stephen Trokel et al. from 1983, first described the method of the refractive correction with an excimer laser. in 1987, by Theo Seiler at University Hospital of the free University of Berlin with photorefractive Keratectomy (PRK), this procedure is followed for the first time in human. In the 1990s, was further developed to LASEK PRK. in 1989, Keratomileusis for the first time combined with Excimerlaserverfahren and was described by Pallikaris et al. If laser in situ Keratomileusis (LASIK). This laser procedure has largely used today mainly other methods such as radial Keratotomy and ousted. In Germany 0. 2% of the population have treat their illnesses by means of refractive surgery (from 2004). Each year 25,000 124,000 undertaken operations (depending on source), and the increase. An outpatient pati ë ntverrichting for the correction of defici ë ences will in Germany currently 1000-2000% 0 per eye and must be in accordance with the directives of the Federal é of Comit doctors are approved and the health insurance of 10 December 1999 by the statutory health insurance company (there are some rare exceptions), such as the exchange of existing cataract lens) it speaks of axis refractive diseases such as focal length of the optical system of the eye is not the length of the eyeball suits. With regard to the eyeball is too long, Augenbrechkraft is the short-sightedness, or myopia. A too-short eyeball leads to farsightedness or hyperopia. The astigmatism, corneal curvature or Stabsichtigkeit occur when the optical system of the eye different focal lengths as well in different meridians has. The size of a refractive error is specified in diopters. Short-sighted need Zerstreuungslinsen with negative refractive power and farsightednessdoublet with a positive refractive power. Directive all refractive surgical operations is the total breaking strength of the optical system of the eye such that the environment hot cards to the retina is. This can be done by the change of the refractive power of the cornea (such as laser procedures such as LASIK or PRK, astigmatism Keratotomy) or by implantation of additional or replacement of the bodyslens are. The crashing power change of the cornea changes their curvature, or by tissue ablation (laser procedure) or by specific cuts that a change in form largely because of pressure to achieve. In the short-sighted eye is a decline, so that the crush strength reduction, and farsighted a representation, so that the crush strength increase. Implants of the lens (intraocular lens) are practically ï ge nplanteerde) lenses that depending on the required correction can be selected. While there are implants, which in addition used for the bodyslens. Laser eye, Coupons for subway, Trieste meteo, previsioni meteo lungo termine, http://hikingpogoda.livejournal.com | |