What is the appearance of the external limiting membrane on an OCT scan?

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Enhance your knowledge in Optical Coherence Tomography (OCT) C Fundamentals. Study with targeted flashcards and multiple-choice questions, each providing hints and detailed explanations. Boost your confidence and be ready for your exam!

Multiple Choice

What is the appearance of the external limiting membrane on an OCT scan?

Explanation:
On OCT, retinal layers are distinguished by how strongly they reflect light. The external limiting membrane is a very thin boundary formed by tight junctions of Müller cells, located between the outer nuclear layer and the photoreceptor inner segments. It shows up as a narrow, highly reflective line, which translates to a thin white band on the image. That’s why the correct description is a thin white band. The other options describe bands that would be too broad, dark, or nonreflective, which doesn’t match the appearance of the external limiting membrane.

On OCT, retinal layers are distinguished by how strongly they reflect light. The external limiting membrane is a very thin boundary formed by tight junctions of Müller cells, located between the outer nuclear layer and the photoreceptor inner segments. It shows up as a narrow, highly reflective line, which translates to a thin white band on the image. That’s why the correct description is a thin white band. The other options describe bands that would be too broad, dark, or nonreflective, which doesn’t match the appearance of the external limiting membrane.

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