Retinal nerve fiber layer

Diagram of the retinal nerve fiber layer

The Retinal Nerve Fiber Layer (RNFL) is a layer of the retina that consists of axons of the retinal ganglion cells. These axons form the optic nerve and transmit visual information from the retina to the brain.

Structure

The RNFL is the innermost layer of the retina, located closest to the vitreous humor. It is composed of the axons of the retinal ganglion cells, which converge to form the optic nerve. The thickness of the RNFL varies across the retina, being thickest near the optic disc and thinning towards the periphery.

Function

The primary function of the RNFL is to transmit visual information from the retina to the brain. This information is processed in the visual cortex to form the images we see. Damage to the RNFL, such as in glaucoma, can lead to vision loss.

Clinical significance

Assessment of the RNFL is important in the diagnosis and management of various eye diseases, including glaucoma and optic neuritis. Techniques such as optical coherence tomography (OCT) can be used to measure the thickness of the RNFL and detect any abnormalities.

See also

• Retina
• Optic nerve
• Glaucoma
• Optical coherence tomography

References

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