Intraocular lens power calculation in eyes with keratoconus

Journal of Cataract and Refractive Surgery
Giacomo SaviniDomenico Schiano-Lomoriello

Abstract

To assess the refractive accuracy of different formulas for intraocular lens (IOL) power calculation in eyes with keratoconus. IRCCS Fondazione Bietti, Rome, Italy. Multicenter retrospective interventional study. A consecutive series of eyes with keratoconus that had cataract surgery were evaluated. Keratometry, anterior chamber depth, and axial length were measured preoperatively with optical biometry; IOL power was calculated with the Barrett Universal II, Haigis, Hoffer Q, Holladay 1, and SRK/T formulas. Subjective refraction was assessed at 1 month. The mean prediction error (PE), median absolute error (MedAE) and percentage of eyes with a PE within ±0.50 diopters (D), ±0.75 D, and ±1.00 D were calculated. The final spherical equivalent was -0.52 D ±1.61 (SD). In the whole sample (41 eyes), the mean PE was positive (hyperopic surprise) with all formulas; the lowest PE (0.91 D) and MedAE (0.62 D) were obtained with the SRK/T formula. In stage I eyes (n = 21), the MedAE ranged between 0.43 and 0.91 D; the SRK/T formula achieved the lowest MedAE and the highest rate of eyes with a PE within ±0.50 (61.9%). In stage II eyes (n = 13), the MedAE ranged between 0.75 D and 1.50 D; the SRK/T formula achieved the lowest MedAE and the ...Continue Reading

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Citations

Jan 30, 2020·European Journal of Ophthalmology·Gabor Nemeth, Laszlo Modis
Jun 6, 2020·Asia-Pacific Journal of Ophthalmology·Tina XiaLinda M Tsai
Aug 21, 2020·Journal of Cataract and Refractive Surgery·Eszter SzalaiAdrienne Csutak
May 3, 2020·Journal of Cataract and Refractive Surgery·Nuria GarzónMaría García-Montero
Oct 17, 2020·Vestnik oftalmologii·V V AverichS E Avetisov
Jun 4, 2020·Current Opinion in Ophthalmology·Ryan G SmithSumit Garg
Apr 26, 2021·Journal français d'ophtalmologie·C DavidN Bouheraoua
Jul 15, 2021·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Min HouMingxing Wu
Aug 5, 2021·Oman Journal of Ophthalmology·P PrijiVenkataramana Kalikivayi
Aug 14, 2021·European Journal of Ophthalmology·Fabrizio Gaetano Saverio FrancoFabrizio Giansanti
Mar 27, 2021·Journal of Cataract and Refractive Surgery·Yokrat TonEhud I Assia
Dec 1, 2021·Clinical & Experimental Ophthalmology·Marco PellegriniMassimo Busin

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