Effect of axial length and keratometry measurement error on intraocular lens implant power prediction formulas in pediatric patients

Maya Eibschitz-Tsimhoni; Omer Tsimhoni; Steven M Archer; Monte A Del Monte

doi:10.1016/j.jaapos.2007.10.012

Effect of axial length and keratometry measurement error on intraocular lens implant power prediction formulas in pediatric patients

J AAPOS. 2008 Apr;12(2):173-6. doi: 10.1016/j.jaapos.2007.10.012.

Authors

Maya Eibschitz-Tsimhoni¹, Omer Tsimhoni, Steven M Archer, Monte A Del Monte

Affiliation

¹ Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan, Ann Arbor, Michigan, USA. mayae@umich.edu

PMID: 18423341
DOI: 10.1016/j.jaapos.2007.10.012

Abstract

Purpose: To examine the relationship between axial length and keratometry measurement errors and intraocular lens (IOL) power calculations for pediatric eyes.

Methods: The sensitivity of IOL power calculation to errors in axial length and keratometry measurements was computed as a function of axial length and keratometry for the SRK II, Hoffer Q, Holladay I, SRK/T, and Haigis formulas.

Results: The sensitivity of the IOL power calculation to an axial length measurement error is increased at 4 to 14 D/mm error in axial length in children compared with 3 to 4 D/mm error in axial length in adults. The error in calculation is 0.8 to 1.3 D/D error in keratometry measurement for both children and adults.

Conclusions: Axial length measurement errors in pediatric eyes may lead to large errors in IOL power calculations.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adult
Child, Preschool
Cornea / anatomy & histology*
Eye / growth & development
Humans
Infant
Lens Implantation, Intraocular* / methods
Lenses, Intraocular*
Predictive Value of Tests
Sensitivity and Specificity
Treatment Outcome