Which of the following is a layer of the retina?

Which of the following is a layer of the retina?

• A. Internal Limiting Membrane
• B. Vitreous Humor
• C. Lens
• D. Choroid

Answer: (A)

The retina has several distinct layers, including an inner boundary that directly interfaces with the vitreous. The Internal Limiting Membrane is that innermost retinal layer; it’s a thin sheet formed by the endfeet of Müller glial cells and the retina’s basement membrane, marking the border between retinal tissue and the vitreous humor. Because of its position and composition, it is considered part of the retinal structure. The vitreous humor fills the space in front of the retina, not a retinal layer; the lens lies anterior to the retina and focuses light; the choroid is the vascular layer behind the retina, not part of its layered neural structure.

The retina has several distinct layers, including an inner boundary that directly interfaces with the vitreous. The Internal Limiting Membrane is that innermost retinal layer; it’s a thin sheet formed by the endfeet of Müller glial cells and the retina’s basement membrane, marking the border between retinal tissue and the vitreous humor. Because of its position and composition, it is considered part of the retinal structure. The vitreous humor fills the space in front of the retina, not a retinal layer; the lens lies anterior to the retina and focuses light; the choroid is the vascular layer behind the retina, not part of its layered neural structure.