Although it is believed that myopia is the result of an interplay between genetic and environmental factors and its progression has been attributed to the lack of outdoor activities and intensive school work, myopia control methods mainly focus on optical and pharmaceutical interventions. Use of bifocal and multifocal lenses have been shown to be ineffective in myopia control. Specially designed soft contact lenses for myopia control have recently been launched, but their effectiveness has yet to be confirmed. Currently, overnight-wear orthokeratology (ortho-k), which involves reshaping the cornea by overnight wear allowing for improved, frequently unaided, vision during the day, is used extensively in Hong Kong. Approximately 50% retardation in axial length elongation was observed in studies of patients receiving ortho-k (LORIC study, 46%, ROMIO study,43%, and TO-SEE study, 52%).