The type of ultrasonography used to detect tumors in the eye is

• A. A-scan
• B. B-scan
• C. C-scan
• D. D-scan

Answer: (B)

Two-dimensional ultrasound imaging (B-scan) provides cross-sectional views of the eye, allowing you to see the retina, choroid, and sclera and to detect and characterize intraocular masses. This makes it the preferred method for spotting tumors, determining their size, shape, and exact location, and assessing whether they extend beyond the eye, even when the eye’s media are opaque or veil the view.

One-dimensional ultrasound (A-scan) gives information along a single line about echo amplitude and depth and is mainly used for measurements like axial length or estimating lesion height, not for visualizing the full structure or extent of a tumor. The other options aren’t standard imaging modalities used to visualize intraocular tumors, so they don’t provide the necessary two-dimensional visualization.