Retina Layers Anatomy

All vertebrate retinas are composed of three layers of cell bodies and two layers of synapses Cell bodies of rodscones Cell bodies of bipolar cells Cell bodies of ganglion cells. Retinal pigment epithelium 2.

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Retinal pigment epithelium 2.

Retina layers anatomy. The outer and middle retinal layers including the outer plexiform and outer nuclear layers the photoreceptors and the retinal pigment epithelium are nourished by branches of the posterior. External limiting membrane 4. Choroid This is made up of a layer of blood vessels that supply oxygen and nutrients to the retina.

Capillaries are found running through all parts of the retina from the nerve fibre layer to the outer plexiform layer and even occasionally as high as in the outer nuclear layer. Nerve fiber layer Axons of ganglion cell layer that form optic nerve Inner limiting membrane. Light must pass through the overlying layers to reach the photoreceptor cells which are of two types rods and cones that are differentiated structurally by their distinctive shapes and functionally by their sensitivity to different kinds of light.

Outer plexiform layer 6. Accumulation of waste can lead to AMD and Stargardt disease. From out to in PhotoReceptor layer.

A small area at the very center of the retina. The primary layers of the retina from outermost surface to innermost surface. M embrane internal limiting N erve fibers G anglions I nner plexiform Inner n uclear O uter plexiform O uter nuclear E xternal limiting membrane P hotoreceptors R etinal pigment epithelium Mnemonic.

Bipolar cell layer 1st order neuron Inner nuclear layer. The microscope discerns 10 layers in the retina counted from inside -out. Outer nuclear layer 5.

Nerve fiber layer 10. Ganglion cell layer 9. Rete is the innermost light-sensitive layer of tissue of the eye of most vertebrates and some molluscsThe optics of the eye create a focused two-dimensional image of the visual world on the retina which translates that image into electrical neural impulses to the brain to create visual perceptionThe retina serves a function analogous to that of the film or image.

The retinal nerve fiber layer and retinal ganglion cell layer are affected in conditions like glaucoma. The retina is a complex tissue with multiple layers of cells responsible for absorption of light and transmission of this signal to the brain. The retina from Latin.

The parts of the retina include. M y N erves G et I n K n ots O utside O ur E asy P ractice R eview. Defect in the CHM gene can cause choroideremia leaky blood vessels can expand in the retina causing wet age-related macular degeneration AMD and diabetic retinopathy.

Nerve fibre layer 10Internal limiting membrane 10. Photoreceptor - bipolar synapse. Anatomy of the retina.

12 million ganglion cells present in retina Each produce a single axon Converge and exit from the eye as OPTIC NERVE 47. The main layers are pigment epithelium and light-sensitive cells photoreceptor layer. The outer retinal layers can become atrophy secondary to conditions that affect the RPE for example in age-related macular degeneration or central serous chorioretinopathy.

Retina is 3 neuron system composed of 3 layers of cells. Ganglion cell layer 2nd order neuron Inner plexiform layer. Layer of Rods Cones 3.

The retina has a complex structure. Pigment epithelium - supporting cells for the neural portion of the retina photopigment regeneration blood it is also dark with melanin which decreases light scatter within the eye. These are followed by external limiting membrane outer nuclear layer outer plexiform synaptic layer inner nuclear.

External limiting membrane 4. The macula provides the best focus for seeing small details on items directly in front of you such as the text of a book. MICROSCOPIC STRUCTURE OF RETINA It has 10 layers.

Inner molecular plexiform layer 8. Nutrients from the vasculature of the choriocapillaris cc behind the pigment epithelium layer supply the delicate photoreceptor layer. Inner nuclear layer 7.

Outer nuclear layer 5. Pigmented epithelium with Zona occludens outer blood-retina barrier Photoreceptors. Proceeding from the vitreous to the choroid are the internal limiting membrane ILM nerve fiber layer NFL ganglion cell layer GCL inner plexiform layer IPL inner nuclear layer INL outer plexiform layer OPL outer nuclear layer ONL external limiting membrane ELM rod and cone inner and outer segments ISOS and retinal pigment epithelium RPE.

Layers Situation Single layer Peripheral retina 2 layers Temporal side of optic disc 6-8 layers Edge of foveola At foveola and optic nerve head ganglion cell layer is absent. The retina is a complex transparent tissue consisting of several layers only one of which contains light-sensitive photoreceptor cells. The neural retina neuroretina is composed of nine layers the internal limiting membrane nerve fiber layer ganglion cell layer inner plexiform layer inner nuclear layer outer plexiform.

Inner nuclear layer 7. Outer molecular plexiform layer 6. Retina is made of a layer of nervous tissue that covers the inside of about two-thirds of the eyeball at back.

Layers of the retina. This ten-layered structure was first proposed by Cajal 1888. Layer of rods and cones 3.

The retina has a dual vascular supply that is similar between the two species. The retina is a single layer of tissue that contains nerve cells that transmit images to the optic nerve. Ganglion cell layer 9.

Layers of the Retina. Retinal pigment epithelium This is a single layer of cells that provide essential nutrition and waste removal for the photoreceptor cells. Broadly there are ten layers in Retina.

It is in fact an extension of your brain formed from neural tissue and connected to the brain by the optic nerve. Inner plexiform layer 8. The inner retinal layers can thin secondary to retinal vascular occlusions like retinal artery occlusions.

Structure And Function Of The Retina

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