Through the real world study with a large sample size,it was conducted to evaluate the efficacy of a ring microstructure designed defocus lens in slowing or controlling myopia in adolescents in realistic clinical settings,which was iBright® defocus lens,and the control product was ordinary single vision lens.Propensity score matching(PSM)was used to control confounding bias.The progression of myopia was assessed by the change of axial length and spherical equivalent determined by objective refraction under cycloplegia.The 6-month follow-up results showed that the total effective rate of iBright® defocus lens in slowing the progression of spherical equivalent was 54.9%and in slowing the progression of axial length was 63.4%.iBright® defocus lens can effectively slow or control the progression of myopia.
defocus lensspherical equivalentaxial lengthmyopia prevention and controlreal world study
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