06. Cheng, D.; Schmid, K. L.; Woo, G. C. & Drobe, B. (2010). Randomized Trial of Effect of Bifocal and Prismatic Bifocal Spectacles on Myopic Progression: Two-Year Results. Arch Ophthalmol, 128, 12-19

06. Cheng, D.; Schmid, K. L.; Woo, G. C. & Drobe, B. (2010). Randomized Trial of Effect of Bifocal and Prismatic Bifocal Spectacles on Myopic Progression: Two-Year Results. Arch Ophthalmol, 128, 12-19