In the inner-to-outer retina sequence, which layer lies directly in front of the choroid?

In the inner-to-outer retina sequence, which layer lies directly in front of the choroid?

• A. Rods and Cones
• B. RPE
• C. ILM
• D. Choroid

Answer: (B)

The layer closest to the choroid, as you move from the inside of the retina outward, is the retinal pigment epithelium. The RPE sits at the outer surface of the neural retina and forms the boundary with the underlying Bruch’s membrane and choroid. It plays a key role in nourishing photoreceptors and in exchanging material with the choroidal blood supply. Rods and cones are farther out toward the outer retina, the ILM is the inner boundary facing the vitreous, and the choroid is the vascular layer behind the retina, not in front of it.

The layer closest to the choroid, as you move from the inside of the retina outward, is the retinal pigment epithelium. The RPE sits at the outer surface of the neural retina and forms the boundary with the underlying Bruch’s membrane and choroid. It plays a key role in nourishing photoreceptors and in exchanging material with the choroidal blood supply. Rods and cones are farther out toward the outer retina, the ILM is the inner boundary facing the vitreous, and the choroid is the vascular layer behind the retina, not in front of it.