Marc Biarnés, PhD, discusses a prospective, longitudinal case series where biometry measurements were evaluated among patients who underwent phacoemulsification with implantation of a Clareon monofocal IOL (Alcon). Concluding data demonstrated clinically irrelevant differences between the Argos (Alcon) and Eyestar 900 (Haag-Streit) swept-source OCT biometers for pre-surgical axial length measurements.