The innermost layer of Bruch's membrane, closest to the retina, is which?

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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 innermost layer of Bruch's membrane, closest to the retina, is which?

Explanation:
The main idea is understanding how Bruch’s membrane is organized between the retina and the choroid. Bruch’s membrane is a five-layer boundary that lies from the choroid toward the retina. Its innermost layer, closest to the retina, is the basement membrane of the retinal pigment epithelium. This places the RPE basement membrane at the retina-adjacent edge of Bruch’s membrane, right where metabolic exchange with the retina occurs. The other layers—basement membrane of the choriocapillaris, outer collagenous, elastic, and inner collagenous layers—lie closer to the choroid.

The main idea is understanding how Bruch’s membrane is organized between the retina and the choroid. Bruch’s membrane is a five-layer boundary that lies from the choroid toward the retina. Its innermost layer, closest to the retina, is the basement membrane of the retinal pigment epithelium. This places the RPE basement membrane at the retina-adjacent edge of Bruch’s membrane, right where metabolic exchange with the retina occurs. The other layers—basement membrane of the choriocapillaris, outer collagenous, elastic, and inner collagenous layers—lie closer to the choroid.

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