title: [Assessment of the efficiency of different formulae applied to calculating the optic power of an intraocular lens in trans-scleral fixation].
abstract: The paper is dedicated to assessing the efficiency of various formulae designed to calculate the IOL optic power, when IOL is fixed transscelerally in patients with an inconsistent ligament-capsular lens apparatus. According to an analysis of the obtained data, the closest values were ensured, as regards the practical result, with theoretical formulae, i.e. Binkhorst, Hoffer-Colenbrander and Binkhorst in situ. The postoperative refraction deviation was below 0.1 diopters, which is optimal for such calculation types. Should the use of theoretical formulae be problematic due to a lack of appropriate devices, then it is acceptable to apply the SRK-II empiric formula with a correction by -1.6 diopters to guarantee the postoperative emmetropia.
authors.forename: D V
authors.initials: DV
authors.lastname: Lipatov
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D006801:Humans; D007910:Lenses, Intraocular; D008875:Middle Aged; D008962:Models, Theoretical; D055095:Optics and Photonics; D012029:Refraction, Ocular; D012590:Sclera / Q000601:surgery