Saratov JOURNAL of Medical and Scientific Research

Likh I.A.

Novosibirsk Ophthalmological Clinic “Eximer”, Ophthalmologist

Analysis of six formulas for intraocular lens optic power calculation precision in eyes with axial length of 20-22 mm

Year: 2020, volume 16 Issue: №2 Pages: 638-642
Heading: Ophtalmology Article type: Original article
Authors: Pershin K.B., Pashinova N.F., Likh I.A., Tsygankov A.Yu.
Organization: Ophthalmological clinics «Eximer»
Summary:

The purpose of the study was to conduct comparative analysis of the accuracy of IOL optical power calculation for eyes with an axial length of 20-22 mm and 22-24 mm. Material and Methods. 147 eyes of 104 patients were included in the study. The study group (I) included 56 patients (81 eyes) with short eyes (average axial eye length 21.17±0.56 (20.02-21.98 mm). Comparison group (II) consisted of 48 patients (66 eyes) with a normal axial length of 22.75±0.46 (22.0-23.77) mm. The IOL optical power was calculated using the SRK/T formula, and the retrospective comparison was made using the Hoffer-Q, Holladay 2, Olsen, Haigis and Barrett Universal I formulas. Results. Group I was characterized by statistically insignificant (p<0.05) differences in the average estimation error for Holladay 2, Hoffer-Q, SRK/T, Olsen and Barrett Universal II formulas (0.19±0.14, 0.23±0.08, 0.15±0.09, 0.21±0.13 and 0.17±0.21 D respectively). When using the Haigis formula, the smallest average estimation error was obtained (0.11±0.02), the differences are significant at the trend level (0.05

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