Abstract
Objectives
To compare central corneal topography (CT) obtained using the IOLMaster 700® biometer to corneal topography obtained using a Swept-Source OCT-based predicated topographer (PT), in candidates for toric intraocular lens (IOL) implantation.
Methods
A retrospective comparative study was conducted in consecutive patients undergoing a routine cataract surgery assessment with significant astigmatism on keratometry. Each patient was examined using both the IOLMaster 700® (Carl Zeiss Meditec, Jena, Germany) and the Anterion® (Heidelberg Engineering, Heidelberg, Germany) for routine preoperative measurements. The corneal axial anterior power map obtained with each device was then anonymized and analysed independently by two ophthalmologists using a reading grid. The reading grid assessed the usual parameters describing astigmatism and evaluated if a toric IOL was indicated or a second topography examination was needed to confirm the indication.
Results
In total, 169 eyes of 120 patients were included. The inter-examination agreement for the astigmatism description ranged from 56 to 85% depending on the reader and parameter. The decision to implant a toric IOL based on the axial map was the same in 59–60% of cases depending on the examiner. A second examination was needed in 18–25% and 8–14% of cases after CT and PT, respectively. The IOLMaster 700® central anterior axial map allowed toric IOL implantation in 58–70% of cases with no need for second corneal examination.
Conclusion
The agreement between the anterior axial maps obtained using both devices was good. However, in about a quarter of the cases, dedicated topography had to be performed to confirm the surgical indication.
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Data availability
The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
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RC and CD were responsible for study design. EA, AL, ID, CD, JB were responsible for patient inclusion and data collection. RC and AL were responsible for the interpretation of the examinations. RC was responsible for the statistical analysis. RC drafted the manuscript. CD, JB, EA, ID advised on data analysis and reviewed the manuscript. Each author reviewed the final manuscript and agrees to be responsible for all aspects of the work, ensuring that issues relating to the accuracy or integrity of any part of the work are considered and resolved appropriately.
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CD is a consultant for Carl Zeiss Meditec. The remaining authors have no financial or proprietary interest in the materials presented herein.
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Chudzinski, R., Levron, A., Agard, E. et al. Comparison of corneal topography maps obtained using the IOLMaster 700® and the Anterion® in candidates for toric IOL implantation. Eye (2024). https://doi.org/10.1038/s41433-024-03094-1
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DOI: https://doi.org/10.1038/s41433-024-03094-1