The comparison of the intraocular lens power calculation formulas in long eyes

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dc.contributor.authorYildiz, Aydin
dc.date.accessioned2025-01-27T21:03:54Z
dc.date.available2025-01-27T21:03:54Z
dc.date.issued2020
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractObjective: To investigate the accurate intraocular lens power formula in eyes with axial length over 26mm by using optical biometry. Methods: The retrospective case series was conducted at Medicana International Avcilar Hospital, Istanbul, Turkey from 2016 to 2018, and comprised data related to years between 2014 and 2018. Optical low-coherence reflectometry had been used in measurements. The calculation methods were included Hill-radial basis function, Sanders-Retzlaff-Kraff-Theoretical, Hoffer Q, Barrett Universal II, Olsen, Haigis and Holladay-2. The spherical equivalent values that were obtained with automated refractometer at the first postoperative month were recorded. Mean absolute error for each formula was estimated. SPSS 16 was used for data analysis. Results: There were 56 eyes of as many patients with a mean axial length of 26.70 +/- 0.88mm. The postoperative numerical error was within +/- 0.50 diopters in 46(82%) patients, and between the -0.50 and -1.00 diopters in 10(18%). The mean absolute error values were significantly lower in Haigis, Sanders-Retzlaff-Kraff-Theoretical, HofferQ and Holladay-2 formulas compared to the Barrett, Hill, and Olsen formulas (p<0.05). There was no statistically significant intra-group difference for Haigis, Sanders-Retzlaff-Kraff-Theoretical, Hoffer Q, and Holladay-2 formulas (p>0.05). Conclusion: In long eyes with an axial length over 26mm, Haigis, Sanders-Retzlaff-Kraff-Theoretical, Hoffer Q and Holladay-2 formulas yielded better postoperative refractive outcomes compared to Hill-radial basis function, Barrett Universal lland Olsen formulas. The Haigis formula had the lowest refractive numerical error.
dc.identifier.doi10.5455/JPMA.15406
dc.identifier.endpage1176
dc.identifier.issn0030-9982
dc.identifier.issue7
dc.identifier.pmid32799269
dc.identifier.scopus2-s2.0-85089192266
dc.identifier.scopusqualityQ3
dc.identifier.startpage1173
dc.identifier.urihttps://doi.org/10.5455/JPMA.15406
dc.identifier.urihttps://hdl.handle.net/20.500.12428/27487
dc.identifier.volume70
dc.identifier.wosWOS:000572453100010
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherPakistan Medical Assoc
dc.relation.ispartofJournal of The Pakistan Medical Association
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectCataract
dc.subjectIntraocular lens
dc.subjectBiometry
dc.titleThe comparison of the intraocular lens power calculation formulas in long eyes
dc.typeArticle

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