Fukuda S, Ueno Y, Fujita A, et al. - Via involving 128 candidates (185 eyes) with mild refractive error or cataract, researchers compared anterior ocular biometric measurements of deep-range swept-source anterior segment optical coherence tomography (AS-OCT) (CASIA2) vs short-range swept-source AS-OCT (CASIA SS-1000), ultrasonography (AL-4000), and Scheimpflug camera analysis (Pentacam and EAS-1000). In cataract patients, CASIA2 demonstrated strong intraclass correlation coefficients (ICCs) of > 0.99 in CCT, AQD, lens thickness, and anterior lens curvature. Conversely, measurements of the posterior part of the lens like lens posterior curvature exhibited lower ICCs. In healthy young participants, the ICCs were higher than in cataract patients. They measured the anterior eye segment's biometric measurements by the CASIA2. The CASIA2 yielded comparable results with the CASIA SS-1000, ultrasonography, and Scheimpflug camera. Mild cataract, however, decreased the repeatability of measurements of the posterior part of the lens.