Ultrasound biomicroscopy (UBM) is a type of ultrasoundeye exam that makes a more detailed image than regular ultrasound.[1][2]
^Foster, F.Stuart; Pavlin, Charles J; Harasiewicz, Kasia A; Christopher, Donald A; Turnbull, Daniel H (2000). "Advances in ultrasound biomicroscopy". Ultrasound in Medicine & Biology. 26 (1): 1–27. doi:10.1016/S0301-5629(99)00096-4. ISSN0301-5629. PMID10687788.