Which layer is located between the retina and sclera and provides blood supply to the eye?

• A. Choroid
• B. Retina
• C. Iris
• D. Pupil

Answer: (A)

The layer between the retina and sclera is the choroid, a vascular, pigmented layer that is part of the uveal tract. It supplies blood to the eye, especially to the outer retina, through the choriocapillaris, delivering oxygen and nutrients to the photoreceptors. While the inner retina receives its blood from the central retinal artery, the outer retina relies on the choroidal circulation. The choroid’s melanin-rich tissue also helps absorb excess light. The iris and pupil are located in front of the eye and are not the layer between retina and sclera, and the retina itself is the innermost sensory layer, not the middle vascular layer.