In the human eye, what color is the retinal nerve fiber layers?

In the human eye, what color is the retinal nerve fiber layers?

• A. Clear
• B. Red
• C. Blue
• D. Green

Answer: (A)

The retinal nerve fiber layer is unpigmented and transparent. It’s made up of the axons of ganglion cells and supporting glial tissue, which do not contain pigments that would give it a color. On imaging that relies on light interaction rather than color, the RNFL appears as a clear, pale layer rather than red, blue, or green. In practical terms, you’re not seeing pigment in the RNFL; you’re seeing its transparent structure overlying the deeper, pigmented choroid and retina. That’s why “clear” is the best answer.

The retinal nerve fiber layer is unpigmented and transparent. It’s made up of the axons of ganglion cells and supporting glial tissue, which do not contain pigments that would give it a color. On imaging that relies on light interaction rather than color, the RNFL appears as a clear, pale layer rather than red, blue, or green. In practical terms, you’re not seeing pigment in the RNFL; you’re seeing its transparent structure overlying the deeper, pigmented choroid and retina. That’s why “clear” is the best answer.