The boundary between the perifovea and periphery is the location where the ganglion cell layer becomes ____ cell layers thick.

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Prepare for the NBEO Ocular Anatomy Posterior Segment and Cranial Nerves Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

The boundary between the perifovea and periphery is the location where the ganglion cell layer becomes ____ cell layers thick.

Explanation:
The boundary between perifovea and periphery is defined by how the ganglion cell layer thickens with eccentricity. Near the fovea, inner retinal layers are displaced and the ganglion cell layer is very thin, essentially a single row. As you move into the perifovea and then further into the periphery, the ganglion cells stack into additional rows, making the layer thicker in the periphery. Thus, the transition point is where the ganglion cell layer is one cell layer thick. Beyond that boundary, it becomes two or more layers thick. So the completion is one cell layer.

The boundary between perifovea and periphery is defined by how the ganglion cell layer thickens with eccentricity. Near the fovea, inner retinal layers are displaced and the ganglion cell layer is very thin, essentially a single row. As you move into the perifovea and then further into the periphery, the ganglion cells stack into additional rows, making the layer thicker in the periphery. Thus, the transition point is where the ganglion cell layer is one cell layer thick. Beyond that boundary, it becomes two or more layers thick. So the completion is one cell layer.

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