Ortho-K lenses provides #ClearVision by temporarily reshaping the cornea In this video, our pediatric opthalmologist Dr. Sumitha Muthu discusses how Ortho-K lenses helped her patient get clear vision to fulfill his dream of playing cricket at state level. Ortho-K stands for orthokeratology. These are fitted custom-made lenses that patient has to wear only while sleeping. They give clear vision without glasses and without contact lenses for almost an entire day by temporarily reshaping the cornea