Titlebook: Ophthalmic Ultrasonography and Ultrasound Biomicroscopy; A Clinical Guide Rasha Abbas Book 2021 The Editor(s) (if applicable) and The Autho

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UBM Examination, ocular segment at near light microscopic resolution and provides detailed assessment of anterior segment structures, including those obscured by normal anatomic and pathologic relations. UBM uses ultrasound frequencies in the 50–100 MHz range, allowing examination of living subsurface ocular tissue