Tamaoki A, Kojima T, Hasegawa A, et al. - In this single-center retrospective observational case series, researchers sought to assess the accuracy and effectiveness of the enhanced retina visualization (ERV) mode in measuring the axial length (AL) of dense cataracts. The sample consisted of 213 consecutive patients (213 eyes) with advanced cataracts who underwent preoperative evaluation. Using two swept-source (SS) optical coherence tomography biometers (OCTB1, OCTB2; IOLMaster 700), the AL was measured before and after surgery. Between OCTB1 with standard mode and OCTB2, the AL acquisition rate was not significantly different. AL measurement using the standard mode of an SS-OCT biometer is difficult in patients with dense cataracts. In addition, in such situations, the ERV mode could be promising for AL measurement.