Outer blood retinal barrier is formed by: (A) Internal limiting mebrane, (B) Endothelium, (C) Retinal pigment epithelium, (D) Ganglion cells
Answer is C. Outer blood retinal barrier is formed by retinal pigment epithelium Blood Retinal Barrier * Outer BRB: Formed by RPE * Inner BRB: Formed by endothelium of microvasculature