From these parameters, the equivalent refractive index of the lens was calculated.

The equivalent refractive index and the power of the lens were calculated from these parameters.

Main outcome measures: The thickness, anterior and posterior radii, equivalent refractive index, and power of the lens.

Furthermore, there was a significant decrease in the equivalent refractive index of their lenses compared with the control group.

Myopia was defined as spherical equivalent refractive error of at least -0.50 D and hyperopia as +2.00 D or more.