There is no consensus on the most suitable intraocular lens formulas for paediatric eyes to provide consistent postoperative results. This study compared modern IOL formulas to identify the smallest mean prediction error among them: Hill-RBF 2.0, Barrett Universal II (BUII), SRK-T, Holladay I and Hoffer Q. The study included 90 eyes of 70 children with mean age 6.47 ±2.3 years; 36 females, 54 males. Mean preoperative best corrected visual acuity was 1.32 ±0.35 logMAR improving to 0.49 ±0.20 postoperatively at 12 weeks. At eight weeks postoperative, mean spherical equivalent refractive error was 0.20 ±1.45D. The Hill-RBF formula had the smallest mean absolute prediction error (MAE) whilst the Holladay I had the highest with significant difference between the two. The Hill-RBF had the highest percentage of eyes with prediction error within ±0.50D. Differences in MAE for Hill-RBF, SRK-T and BUII were not significant. The authors conclude the Hill-RBF formula is non-inferior to other IOL formulae in paediatric eyes. They acknowledge the limitations of this study including small sample size, no children aged under four years and no axial lengths above 26mm.
Comparison of five IOL formula for paediatric eyes
Reviewed by Fiona Rowe
Predictive accuracy of the Hill-RBF 2.0 formula in pediatric eyes: comparison of five intraocular lens formulas.
CONTRIBUTOR
Fiona Rowe (Prof)
Institute of Population Health, University of Liverpool, UK.
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