Orthokeratology

Orthokeratology

Ok lens is made of high rigid gas permeable lens material with a double reverse geometry lens design. It is designed to compress and reshape the corneal curvature in order to temporally correct the refractive error and to retard the myopia progression. The patient only needs to wear the lens during sleep hours and will have clear vision throughout all day after lens removal in the morning without any optical aids.

In General, an Ok lens can easily correct myopia prescription up to -3.00D, and maybe up to -5.00D~-5.50D depends on individual’s corneal condition. According to many international journals and Dr. Hsiao’s research, wearing Ok lenses can effectively slow down the myopia progression by at least 50 %.

Thorough eye examination, accurate refraction, and pre-fitting case history are all part of Ok fitting screening tests. The Ok fitting procedures include fluorescence staining, corneal evaluation, and lens centration, lens movement, lens congruency on the cornea. All these are done to make sure no damage could happen to cornea due to lens wear.

Ok lens is not just a special type of contact lenses, instead, it is a customized corrective lens based on fitter’s experience and technique towards Ok lens fitting.

蕭清仁 版權所有請勿轉載