Which description best matches the choriocapillaris in relation to the outer retina?

Which description best matches the choriocapillaris in relation to the outer retina?

• A. It nourishes the RPE and Photoreceptors
• B. It nourishes the inner retina only
• C. It regulates intraocular pressure
• D. It generates aqueous humor

Answer: (A)

The outer retina relies on the choroidal blood supply for nourishment. The choriocapillaris, a dense capillary network in the choroid just beneath Bruch’s membrane, delivers oxygen and nutrients to the retinal pigment epithelium (RPE) and photoreceptors, and helps remove metabolic waste. This support is essential for photoreceptor maintenance and the visual cycle managed by the RPE. The inner retina gets its blood supply from the retinal vessels, not the choriocapillaris, and aqueous humor is produced by the ciliary body, not by this capillary layer. So the description that matches is that it nourishes the RPE and photoreceptors.

The outer retina relies on the choroidal blood supply for nourishment. The choriocapillaris, a dense capillary network in the choroid just beneath Bruch’s membrane, delivers oxygen and nutrients to the retinal pigment epithelium (RPE) and photoreceptors, and helps remove metabolic waste. This support is essential for photoreceptor maintenance and the visual cycle managed by the RPE. The inner retina gets its blood supply from the retinal vessels, not the choriocapillaris, and aqueous humor is produced by the ciliary body, not by this capillary layer. So the description that matches is that it nourishes the RPE and photoreceptors.