Structure of the Retina of The Eye

Layer
No.

Term

Definition / Description

(1)

Membrana limitans interna

The membrana limitans interna is the retinal layer located nearest to the centre of the eyeball - in contact with the hyaloid membrane of the vitreous humour.

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(2)

Stratum opticum

The stratum opticum is the extension of the optic nerve and is at its thickest around the optic disc, gradually reducing in thickness towards the ora serrata.

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(3)

Ganglionic layer

The ganglionic layer is a single layer of large ganglion cells stretching across the retina except in the region of the fovea where there are several ganglia deep.

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(4)

Inner molecular layer

The inner molecular layer consists of a network of fibres connecting and meshing together the dendrites of ganglion cells with cells of the inner nuclear layer.

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(5)

Inner nuclear layer

The inner nuclear layer consists of three different types of cells that are packed closely together.

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(6)

Outer molecular layer

The outer molecular layer is a dense network of tiny fibres extending from the processes of cells of inner nuclear layer.

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(7)

Outer nuclear layer

The inner nuclear layer contains sub-layers of oval-shaped components called rod-granules and cone-granules.

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(8)

Membrana limitans externa

In common with the membrana limitans interna, the membrana limitans externa is formed from the fibres of Müller.

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(9)

Jacobs Membrane

The Jacob's membrane is composed of two types of units, they are rods (which are the more numerous to the two), and cones.

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(10)

Pigmentary layer

The pigmentary layer (or "Tapetum Nigrum") is the most external - i.e. the most distant from the centre of the eye, layer of the retina.

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