![]() However, orthokeratology in its modern form was developed first in the 1960s, when eye doctors noticed that their patients with higher refractive issues developed “spectacle blur” after wearing hard contact lenses for some time. Reports suggest that thousands of years ago, Chinese doctors would apply sandbags to the eyes of people who had poor eyesight in an effort to reduce corneal curvature. The History of Nonsurgical Vision Correction, Leading to Orthokeratology It slows the progression of myopia or temporarily eliminates the issue. While there were reports of adverse events (namely, infections) in the early era of orthokeratology treatment, overnight orthokeratology has been found to be largely safe for people of all ages, from young children to adults. A second orthokeratology process, the vision shaping treatment, was approved in 2004. Food and Drug Administration (FDA) in 2002, for treatment of myopia up to 6 diopters and astigmatism up to 1.75 diopters. The corneal refractive therapy (CRT) contact lens and process were approved by the U.S. It is also appropriate for some children to slow the progression of myopia. Reshaping the eye without surgery is an appealing option for many people who may not like the idea of small blades or lasers reshaping their cornea and lens, even if the healing time is only a day or two. Ortho-K works well for people with lower degrees of myopia (nearsightedness) or low-level astigmatism. Once you stop wearing the specific series of contact lenses and graduate to wearing the “retainer” contact lenses, you must keep wearing these overnight or your vision will gradually decline again over a few days. The results of the procedure are painless, but they are not permanent. Special rigid, gas-permeable contact lenses are worn overnight, which temporarily reshapes your cornea, so light is correctly refracted to the retina, and you can see clearly the next day. It is the process of molding or reshaping the surface of the cornea without surgery, only using a special contact lens. Orthokeratology is often referred to as ortho-K, and it is sometimes likened to braces for your eyes. Even though the procedure is painless, its results are only temporary and can be reversed when you stop wearing contact lenses. Ortho-k works best for those with low degrees of nearsightedness (myopia) and astigmatism. Reshaping your cornea without undergoing surgery is an attractive option for people who don’t want to or cannot undergo surgery. ![]() ![]() When you graduate from wearing the special contact lenses to wearing so-called “retainer” contact lenses, you will have to wear them every night to keep your vision from deteriorating. The reshaping of the cornea corrects light refraction to your retina such that you can clearly see the following day. The corneas and lenses in people with astigmatism or myopia do not refract light properly to the retina, thus making objects seem blurry or doubled.ĭuring the ortho-k procedure, you will be given special hard gas-permeable contact lenses to wear overnight to reshape your cornea gently. ![]() The cornea is the transparent dome-shaped region that protects the internal parts of your eye and refracts light to the retina, which in turn sends it to the brain for interpretation. The procedure involves reshaping or molding the cornea’s surface using unique contact lenses rather than undergoing extensive surgical procedure. Orthokeratology, also known as ortho-k, is much like getting braces to straighten your teeth.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |