Which eye layer is the vascular layer?

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Multiple Choice

Which eye layer is the vascular layer?

Explanation:
The vascular layer is the choroid. It sits between the sclera (the white, fibrous outer coat) and the retina and is rich in blood vessels that supply the outer retina, especially the photoreceptors, with oxygen and nutrients via the choroidal circulation. The retina itself is neural tissue with its own microvasculature, but the main vascular layer of the eye wall is the choroid. The sclera is largely avascular, and while the iris is vascular as part of the uveal tract, it is not the primary vascular layer.

The vascular layer is the choroid. It sits between the sclera (the white, fibrous outer coat) and the retina and is rich in blood vessels that supply the outer retina, especially the photoreceptors, with oxygen and nutrients via the choroidal circulation. The retina itself is neural tissue with its own microvasculature, but the main vascular layer of the eye wall is the choroid. The sclera is largely avascular, and while the iris is vascular as part of the uveal tract, it is not the primary vascular layer.

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