It is exciting that the technology named orthokeratology applied to your contact lenses can reshape your cornea at night and offer a clearer vision even without contacts at daytime. Although the magic effect lasts about only one day, it is great for many people.
Ortho-k has been practiced to reshape cornea since decades ago, but it got a complete approval from FDA only several years ago. The development of Ortho-k contact lenses has undergone a harsh process. Until now, some new manufacturing methods such as “reverse geometry” and lens designs such as “return zero” have bring a higher success rate to Ortho-k contact lenses.