Prediction error and myopic shift after intraocular lens implantation (IOL) in paediatric cataract patients.

摘要

To the Editor We read the article on 'Prediction error and myopic shift after intraocular lens implantation (IOL) in paedi-atric cataract patients' by Hoevenaars and colleagues with great interest. The authors have demonstrated very well the complexity in predicting the postoperative refraction in paediatric cataract patients. We had the following observations regarding the methodology and interpretation of the results. The authors have not mentioned if the per-operative measurements and IOL power calculation were performed by the same observer or different observers. This could lead to interobserver variation and inadvertently influence the study outcomes. The authors have implanted multiple types of IOL such as polymethyl methacrylate, fold-able silicone and foldable acrylic IOLs. Silicone IOLs undergo a continuous forward movement in the postoperative period. We believe this can lead to an enhanced myopic shift and, in turn, skew the prediction error.