### Abstract

Purpose: We sought to evaluate the accuracy of intraocular lens calculations in children undergoing cataract extraction with intraocular lens (IOL) implantation. Methods: This was a retrospective review of 101 consecutive cases of pediatric cataract extraction with posterior chamber IOL. Median age at the time of surgery was 4.8 years, and 23 of the children were younger than 2 years of age. Initial IOL calculations were made using either the SRK II or SRK T formulas. Preoperative predictive data were compared with the refractive result obtained at the 2-month postoperative visit. Prediction error was calculated for each patient, and lens calculation errors were back-calculated for each of 4 commonly used IOL calculation formulas, including the SRK II, SRK T, Holladay I, and Hoffer Q. Results: The mean prediction error for all patients was 0.30 D. Despite this level of overall accuracy, significant variability did occur with outcomes ranging from -4.06 D to + 3.86 D of the desired spherical equivalent. Mean absolute prediction error was 1.16 D with no significant difference between the SRK II and SRK T formulas. Lens calculation errors predicted by each of the 4 formulas studied demonstrated a high degree of variability with the SRK II being the least variable and the Hoffer Q being the most variable, particularly among the youngest group of children with the axial lengths less than 19 mm. Conclusions: The accuracy of commonly used IOL calculation formulas is generally reasonable but highly variable within the pediatric population, Newer theoretic IOL calculation formulas did not outperform older regression models.

Original language | English |
---|---|

Pages (from-to) | 160-165 |

Number of pages | 6 |

Journal | Journal of AAPOS |

Volume | 9 |

Issue number | 2 |

DOIs | |

State | Published - Apr 2005 |

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### ASJC Scopus subject areas

- Ophthalmology

### Cite this

*Journal of AAPOS*,

*9*(2), 160-165. https://doi.org/10.1016/j.jaapos.2004.12.010

**Accuracy of intraocular lens calculations in infants and children undergoing cataract surgery.** / Neely, Daniel; Plager, David; Borger, Sara M.; Golub, Richard L.

Research output: Contribution to journal › Article

*Journal of AAPOS*, vol. 9, no. 2, pp. 160-165. https://doi.org/10.1016/j.jaapos.2004.12.010

}

TY - JOUR

T1 - Accuracy of intraocular lens calculations in infants and children undergoing cataract surgery

AU - Neely, Daniel

AU - Plager, David

AU - Borger, Sara M.

AU - Golub, Richard L.

PY - 2005/4

Y1 - 2005/4

N2 - Purpose: We sought to evaluate the accuracy of intraocular lens calculations in children undergoing cataract extraction with intraocular lens (IOL) implantation. Methods: This was a retrospective review of 101 consecutive cases of pediatric cataract extraction with posterior chamber IOL. Median age at the time of surgery was 4.8 years, and 23 of the children were younger than 2 years of age. Initial IOL calculations were made using either the SRK II or SRK T formulas. Preoperative predictive data were compared with the refractive result obtained at the 2-month postoperative visit. Prediction error was calculated for each patient, and lens calculation errors were back-calculated for each of 4 commonly used IOL calculation formulas, including the SRK II, SRK T, Holladay I, and Hoffer Q. Results: The mean prediction error for all patients was 0.30 D. Despite this level of overall accuracy, significant variability did occur with outcomes ranging from -4.06 D to + 3.86 D of the desired spherical equivalent. Mean absolute prediction error was 1.16 D with no significant difference between the SRK II and SRK T formulas. Lens calculation errors predicted by each of the 4 formulas studied demonstrated a high degree of variability with the SRK II being the least variable and the Hoffer Q being the most variable, particularly among the youngest group of children with the axial lengths less than 19 mm. Conclusions: The accuracy of commonly used IOL calculation formulas is generally reasonable but highly variable within the pediatric population, Newer theoretic IOL calculation formulas did not outperform older regression models.

AB - Purpose: We sought to evaluate the accuracy of intraocular lens calculations in children undergoing cataract extraction with intraocular lens (IOL) implantation. Methods: This was a retrospective review of 101 consecutive cases of pediatric cataract extraction with posterior chamber IOL. Median age at the time of surgery was 4.8 years, and 23 of the children were younger than 2 years of age. Initial IOL calculations were made using either the SRK II or SRK T formulas. Preoperative predictive data were compared with the refractive result obtained at the 2-month postoperative visit. Prediction error was calculated for each patient, and lens calculation errors were back-calculated for each of 4 commonly used IOL calculation formulas, including the SRK II, SRK T, Holladay I, and Hoffer Q. Results: The mean prediction error for all patients was 0.30 D. Despite this level of overall accuracy, significant variability did occur with outcomes ranging from -4.06 D to + 3.86 D of the desired spherical equivalent. Mean absolute prediction error was 1.16 D with no significant difference between the SRK II and SRK T formulas. Lens calculation errors predicted by each of the 4 formulas studied demonstrated a high degree of variability with the SRK II being the least variable and the Hoffer Q being the most variable, particularly among the youngest group of children with the axial lengths less than 19 mm. Conclusions: The accuracy of commonly used IOL calculation formulas is generally reasonable but highly variable within the pediatric population, Newer theoretic IOL calculation formulas did not outperform older regression models.

UR - http://www.scopus.com/inward/record.url?scp=17444405294&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=17444405294&partnerID=8YFLogxK

U2 - 10.1016/j.jaapos.2004.12.010

DO - 10.1016/j.jaapos.2004.12.010

M3 - Article

C2 - 15838444

AN - SCOPUS:17444405294

VL - 9

SP - 160

EP - 165

JO - Journal of AAPOS

JF - Journal of AAPOS

SN - 1091-8531

IS - 2

ER -