Courtesy of Kenneth J. Hoffer, MD.
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Cataract/Anterior Segment, Refractive Mgmt/Intervention
A, In immersion ultrasonography, the probe is immersed in the solution, placing it away from the cornea. B, Prager shell for immersion A-scan. C, Ultrasound probe and Kohn shell. D, B-scan of an eye with staphyloma, showing the difference between the anatomical length (A) and the visual length (V).