[A new formula for determining the refractive power of intraocular lenses].

New, simplified formulas for calculating the refractive power of intraocular lenses are presented. These formulas were derived by mathematical methods. With the aid of these formulas it is possible to calculate an emmetropizing lens, residual refraction and desired postoperative refraction. The error in other formulas used for eyes with short axial lengths can be avoided with this new formula, due to its linearity.