Which of the following is not among the six main retinal layers found within the fovea?

• A. RPE
• B. Bruch's membrane
• C. Henle's layer
• D. ILM

Answer: (B)

The structure not among the six main retinal layers in the fovea is Bruch’s membrane. Bruch’s membrane sits outside the neural retina, between the retinal pigment epithelium (RPE) and the choroid, and thus is not counted as a retinal layer. The fovea’s retinal architecture includes the inner limiting membrane, and the layers of the neural retina (such as the nerve fiber layer, ganglion cell layer, inner plexiform layer, and inner nuclear layer) along with the specialized Henle’s fiber layer in the outer retina. The RPE is closely associated with photoreceptors but is considered part of the retinal complex, while Bruch’s membrane lies outside that retinal framework.