by Joel Harrison
21. October 2011 12:00
Contact lenses, in spite of their effectiveness, generally improve a person’s vision only temporarily – when they are present in the eye. However, a new kind of contact lenses has been proved able to improve eyesight for some time after removing them.
Corneal Refractive Therapy (CRT, also known as Ortho-K) lenses provide similar results to laser surgery (removing such conditions as myopia or astigmatism) and can be viewed as a real alternative to it.
An American TV station has recently investigated the effectiveness of using CRT lenses in two teenagers from Atlanta, Georgia, who started using them because they were not old enough to undergo a LASIK procedure. Dr Sweeney, the optometrist who fitted the teenagers, Freddy Hart and Andrea Pascual, with the lenses stated that he was certain that they would have a positive impact on their vision. He also explained that CRT lenses correct the shape of a patient’s cornea when it is worn at night, and the patient can see very well throughout the next day.
Andrea confessed she started to feel the difference several days after the beginning of her therapy and can now see extremely well all day long without using glasses or conventional contact lenses. Dr Sweeney is happy with the results and plans to fit more patients with CRT lenses.
Subscribe