title: [Formula for calculating the IOL focal power].
abstract: A formula for calculating the focal IOL power based on SRK-II is suggested and clinically tested. Quadratic non-linear allowances in small (below 23 mm) and big values of the anterior-posterior eye axis are introduced into it, instead of linear allowances, to enhance the calculation accuracy.
authors.forename: M N
authors.initials: MN
authors.lastname: Ivanov
authors.forename: A Iu
authors.initials: AIu
authors.lastname: Shevelev
mesh_terms: D006801:Humans; D007910:Lenses, Intraocular; D008962:Models, Theoretical; D055095:Optics and Photonics; D012029:Refraction, Ocular