Orthokeratology (Ortho-K) & Myopia Control
These are custom rigid oxygen permeable contact lenses worn during sleeping hours only, for gentle, temporary reshaping of the cornea. This provides for clear vision all-day long without the need for glasses or contact lenses. Regular over-night wear is required to maintain the effect indefinitely. CRT contact lenses can provide ideal vision correction for active children, especially those involved with sports. Since they are only worn at night, the lenses never leave the home. Also children needing protective eyewear, can now use less expensive non-prescription sports glasses. Several international studies* suggest that CRT lenses may also slow down or stop the progression of myopia (near-sightedness) in children and adolescents.
It is estimated that myopia affects a quarter of the world’s population, 1 in 3 in the USA and 1 in 2 in some Asian countries. Genetics plays a role, as well the wide-spread use of computers and electronics. The incidence of myopia is rising fast enough to be considered an epidemic. The danger is that severe myopia increases the risk of retinal detachment, glaucoma and other serious eye disorders.
For adults, some careers require good vision without the dependence on eyeglasses and regular daytime wear contact lenses. CRT lenses might be an excellent option for these individuals since the lenses are only worn during sleep. They can also benefit people who have failed with traditional daytime contact lens wear.
Since gaining Food and Drug Administration (FDA) approval in 2002, CRT lenses are recognized as the gold standard for safety in corneal reshaping. Over a million lenses have been dispensed worldwide with a proven safety track record.
For more information, visit www.allaboutvision.com/crt/