For 15-year-old student Wang, his myopia reached 400 after entering junior high school. Sunlight usually made him feel dizzy even though he had been applying long-acting mydriatics to prevent the myopia. Wearing glasses while playing sports is very inconvenient. Furthermore, he’s ever considered wearing the hard orthokeratology lenses at nights to control the myopia, but he cannot due to the foreign body sensation caused by the hard contact lens and subsequent insufficient sleeping time.