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.
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.
Authors: Deborah K Vanderveen; Rupal H Trivedi; Azhar Nizam; Michael J Lynn; Scott R Lambert Journal: Am J Ophthalmol Date: 2013-09-04 Impact factor: 5.258
Authors: Deborah K VanderVeen; Azhar Nizam; Michael J Lynn; Erick D Bothun; Scott K McClatchey; David R Weakley; Lindreth G DuBois; Scott R Lambert Journal: Arch Ophthalmol Date: 2012-03