Paz Orts-Vila, MD, PhD, describes that dense cataracts can be challenging and emphasizes the importance of axial length when calculating IOP power in cataract surgery. She discusses results of a comparative study between two swept-source OCT devices, where results suggest both the Argos swept-source OCT biometer (Alcon) and Eyestar 900 (Haag-Streit) can penetrate dense cataracts with ease.