PT - JOURNAL ARTICLE AU - Wendelstein, Jascha AU - Hoffmann, Peter AU - Hirnschall, Nino AU - Fischinger, Isaak Raphael AU - Mariacher, Siegfried AU - Wingert, Tina AU - Langenbucher, Achim AU - Bolz, Matthias TI - Project hyperopic power prediction: accuracy of 13 different concepts for intraocular lens calculation in short eyes AID - 10.1136/bjophthalmol-2020-318272 DP - 2022 Jun 01 TA - British Journal of Ophthalmology PG - 795--801 VI - 106 IP - 6 4099 - http://bjo.bmj.com/content/106/6/795.short 4100 - http://bjo.bmj.com/content/106/6/795.full SO - Br J Ophthalmol2022 Jun 01; 106 AB - Purpose To evaluate the accuracy of intraocular lens (IOL) power calculation in a patient cohort with short axial eye length to assess the performance of IOL power calculation schemes in strong hyperopes.Methodology The study was a single centre, single surgeon retrospective consecutive case series at the Augen- und Laserklinik, Castrop-Rauxel, Germany. Inclusion of patients after uneventful cataract surgery implanting either spherical (SA60AT) or aspheric (ZCB00) IOLs. Inclusion criteria were axial eye length <21.5 mm and/or emmetropising IOL power >28.5 D. Lens constants were optimised on a separate patient cohort considering the full bandwidth of axial eye length. Data of one single eye per patient were randomly included. The outcome measures were: mean absolute prediction error (MAE), median absolute prediction error, mean prediction error with SD and median prediction error and the percentage of eyes with an MAE within 0.25 D, 0.5 D, 0.75 D and 1.0 D.Results A total of 150 eyes from 150 patients were assessed. Okulix, PEARL-DGS, Kane and Castrop provided a statistically significantly smaller MAE compared with the Hoffer Q and SRK/T formulae.Conclusion In our patient cohort with short axial eye length, the use of PEARL-DGS, Okulix, Kane or Castrop formulae showed the lowest MAE. The Castrop formula has not been published before, but will be disclosed with a ready-to-use Excel sheet as an addendum to this paper.All data relevant to the study are included in the article or uploaded as online supplemental information.