Internal limiting membrane
Internal Limiting Membrane
The Internal Limiting Membrane (ILM) is the innermost layer of the retina. It is a thin basement membrane that separates the retina from the vitreous body.
Pronunciation
Internal Limiting Membrane: /ɪnˈtɜːrnl ˈlɪmɪtɪŋ ˈmɛmbreɪn/
Etymology
The term "Internal Limiting Membrane" is derived from its anatomical position as the innermost layer of the retina, limiting the boundary between the retina and the vitreous body.
Structure
The Internal Limiting Membrane is composed of the footplates of Müller cells, which are a type of glial cell found in the retina. It is the thinnest of the retinal layers, measuring approximately 0.5 to 2 micrometers in thickness.
Function
The primary function of the Internal Limiting Membrane is to provide a barrier between the retina and the vitreous body. It also plays a role in maintaining the structural integrity of the retina.
Related Terms
- Retina: The light-sensitive layer of tissue at the back of the inner eye.
- Vitreous body: The clear gel that fills the space between the lens and the retina of the eyeball.
- Müller cells: A type of retinal glial cell that span the entire thickness of the retina.
See Also
External links
- Medical encyclopedia article on Internal limiting membrane
- Wikipedia's article - Internal limiting membrane
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