Ortho-K 101 in Vietnamese. In this weekly, Thursdays 5:00 P.M. on 106.3 F.M. talk show with Anh Quoc Thai, we will discuss the basics of Ortho-K therapy. What is Ortho-K? How can it help slow down nearsighted prescription from increasing. What are the benefits of Ortho-K for nearsighted children who had to been confined at home learning online the last few months during COVID-19 lock down?