Orthokeratology Side Effects – Is There Any?
By M Henry Submitted On July 21, 2009
The practice of orthokeratology, or doing vision correction through corneal reshaping, has been around for a number of years. But, thus far, there are only a few orthokeratology lens designs that have been approved by the US Food and Drugs Administration (FDA) for manufacture and commercial distribution. Studies are still ongoing as to the benefits and side effects of orthokeratology but there are no new designs that are in the offing. Doctors, using their own orthokeratologic expertise, have been allowed to come up with their own designs customized depending on their patients’ needs. There are software packages that have been developed and made available to these doctors to help them in designing customized orthokeratology contact lenses especially for those patients with irregularly shaped eyes.
It was in 2002 when the first FDA-approved overnight wear corneal reshaping tool was made available to the market. The Corneal Refractive Therapy or CRT is made by Paragon Vision Sciences Inc. Other brands followed suit and secured FDA approval in 2004 and in 2005. Further studies in orthokeratology yielded advances towards treatment of myopia and slowing down of myopic progression. Studies in countries outside the US as well are being conducted to further validate this orthokeratology benefits. No new designs for orthokeratology contact lenses are up for FDA approval but studies are still continuously being conducted to improve the new vision correction technology.
Orthokeratology corrects vision through reshaping the cornea. Studies show that epithelial cells on the corneal surface are either compressed or relocated by the orthokeratology implement. Vision correction up to -6.00D are made possible through orthokeratology. There are, however, orhtokeratology side effects that have been found to result from using orthokeratology implements. These orthokeratology side effects could even result in blindness. Experts attribute these orthokeratology side effects to a patient’s failure to strictly follow usage instructions and precautions. Hygiene is one of the more common reason for blindess as one of the orthokertology side effects.
Another cause for orthokeratology side effects is the use of the wrong materials in the manufacture of the orthokeratology contact lens. Corneal hypoxia or the lack of oxygen in the eyes could be experienced when using a non-oxygen permeable material in overnight-use contact lenses. Only those orthokeratology contact lenses that are made of the right materials should be used by those with vision impairment concerns. Other orthokeratology side effects include vision ghosting, contrast problems, and double vision especially during night time.
Before you use any orthokeratology implement, you have to consult with your eye care professional. Doing this will steer you away from the dangers that may come with the improper usage of these implements or worse the substandard materials that are used in non-FDA approved implements passing off as orthokeratology implements. When it comes to your vision, there are no compromises. You need to make sure that you are only using legitimate products that fit your particular requirements. You do not want to endanger your health by going for cheaper but not necessarily better products in the market. Keep yourself informed about your options all the time so that you can make the best decisions regarding your eye health.
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