03. Leung, J. T. & Brown, B. (1999). Progression of myopia in Hong Kong Chinese schoolchildren is slowed by wearing progressive lenses. Optom Vis Sci, 76, 346-354

03. Leung, J. T. & Brown, B. (1999). Progression of myopia in Hong Kong Chinese schoolchildren is slowed by wearing progressive lenses. Optom Vis Sci, 76, 346-354