Abstract
Using special materials with a reverse geometry for contact lenses is named orthokeratology. It is a non-surgical modern medical alternative to conventional contact lenses for correction of myopia. Orthokeratology is an alternative treatment for patients with progressive myopia, especially children. The contact lenses is using during the night for minimum 6 h. With these special contact lenses children can be treated after 18 years old with refractive corneal surgery. The materials of night contact lens are gas permeable and permit progressive aplanation of central cornea, which induced decreasing of myopia or myopic astigmatism. The purpose for this study is to prove the effectiveness in improving of the quality of vision using night contact lens. The study also monitored the effectiveness of orthokerathology as a preventive method for amblyopia in myopic or astigmatic patients.
Keywords: contact lenses; orthokeratology; myopia; refractive corneal surgery; myopic astigmatism