05. Gwiazda J, Hyman L, Hussein M, Everett D, and the COMET group. A randomized clinical trial of progressive addition lenses versus single vision lenses on the progression of myopia in children. Invest Ophthalmol Vis Sci 2003; 44: 1492-1500.

05. Gwiazda J, Hyman L, Hussein M, Everett D, and the COMET group. A randomized clinical trial of progressive addition lenses versus single vision lenses on the progression of myopia in children. Invest Ophthalmol Vis Sci 2003; 44: 1492-1500.