Where is the choroid thickest?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

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

Where is the choroid thickest?

Explanation:
The choroid is thickest in the posterior pole because this region has the highest metabolic demand from the outer retina, especially beneath the macula and near the optic nerve. Its layers—large vessels in the deeper part and a dense choriocapillaris closer to the retina—provide the substantial blood supply needed to support the photoreceptors and RPE. As you move anteriorly toward the equator and then to the ora serrata, the demand and the vascular mass decrease, so the choroid becomes thinner. The fovea sits within the macula, but the choroid directly underneath is not the deepest part; the thickest portion is posteriorly, behind the central retina.

The choroid is thickest in the posterior pole because this region has the highest metabolic demand from the outer retina, especially beneath the macula and near the optic nerve. Its layers—large vessels in the deeper part and a dense choriocapillaris closer to the retina—provide the substantial blood supply needed to support the photoreceptors and RPE. As you move anteriorly toward the equator and then to the ora serrata, the demand and the vascular mass decrease, so the choroid becomes thinner. The fovea sits within the macula, but the choroid directly underneath is not the deepest part; the thickest portion is posteriorly, behind the central retina.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy