Distribution and inter-device agreement of chord mu/alpha lengths and axes between Pentacam HR, Sirius, and IOLMaster 700

C-µ and C-α measurements vary significantly across devices, with the poorest agreement consistently observed between Pentacam HR and IOLMaster 700, particularly in myopic eyes. These discrepancies are clinically relevant when planning centration-sensitive procedures such as multifocal intraocular lens implantation or wavefront-guided laser-assisted in situ keratomileusis. Surgeons should account for inter-device variability and consider device-specific measurement biases when planning treatment.