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Prediction error and myopic shift after intraocular lens implantation in paediatric cataract patients
N E D Hoevenaars1, J R Polling, R C W Wolfs
1Erasmus University Medical Center, Department of Ophthalmology, 3000-CA Rotterdam, The Netherlands.
Insights
Pediatric cataract surgery outcomes vary by age. Younger children, especially those under one year, experience greater myopic shifts, complicating IOL power selection.
Area of Science:
- Ophthalmology
- Pediatric eye care
- Refractive error management
Background:
- Cataract surgery in children requires precise intraocular lens (IOL) power calculation.
- Predicting refractive outcomes in pediatric populations is challenging due to ongoing ocular development.
- Myopic shift after pediatric cataract surgery can impact visual development and require further intervention.
Purpose of the Study:
- To quantify myopic shift following intraocular lens implantation in children post-cataract surgery.
- To assess the success rate in achieving target refraction in pediatric patients.
- To identify factors influencing refractive outcomes and prediction errors.
Main Methods:
- Children were stratified into three age groups: 0-1 years (Group A), 1-7 years (Group B), and 7-18 years (Group C).
- Multiple regression analysis was employed to develop a predictive formula for myopic shift.
- Variables associated with prediction error were identified.
Main Results:
- Infants under 12 months showed significantly higher myopic shifts and a faster annual refractive change rate.
- Younger age at surgery and unilateral cataract were associated with greater myopic shifts.
- Absolute prediction error was notably higher in Group A compared to Groups B and C.
- Corneal radius emerged as the sole significant predictor of absolute prediction error.
Conclusions:
- Accurate prediction of postoperative refraction is complex in children under one year old.
- Age at the time of surgery and laterality (unilateral vs. bilateral) are critical factors for IOL power selection.
- Further research is needed to refine IOL power calculation formulas for very young children.
Aim:
To determine the amount of myopic shift in children after cataract surgery with intraocular lens (IOL) implantation and to evaluate success in achieving the target refraction.
Methods:
The children were assigned into three groups depending on age at time of surgery: Group A, 0-1 years old; Group B, 1-7 years old; Group C, 7-18 years old. Multiple regression analysis was used to create a formula for expected myopic shift and to find out which variables were associated with a higher absolute prediction error.
Results:
Children less than 12 months of age experienced higher myopic shifts and a larger mean rate of refractive change per year compared with older children. We found higher myopic shifts in younger children at time of surgery and children with unilateral cataract. Absolute prediction error was significantly higher in Group A compared with Groups B and C (p=0.022 and p=0.037, respectively). Multiple regression analysis showed that corneal radius was the only variable significantly associated with absolute prediction error.
Conclusion:
Our data demonstrate the complexity in predicting the postoperative refraction in children under 1 year old and show that age at surgery and laterality are factors to consider when deciding which IOL power to implant in children.
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