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. Author manuscript; available in PMC: 2014 Dec 2.
Published in final edited form as: Ophthalmology. 2009 Jul 9;116(10):1839–1845. doi: 10.1016/j.ophtha.2009.04.004

Figure 1.

Figure 1

Flow chart of screening and recruitment at 5 junior high schools and progress through the clinical trial. D = diopter; CS = custom spectacles; RMS = ready-made spectacles; SE = spherical equivalent refractive error.