File:Eye and retina cartoon.jpg

From Embryology

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Eye and Retina

The Eye
  • Retina forms the inner lining of the most of the posterior part of the eye.
  • The RPE is sandwiched between the retina and choroids, a vascularized and pigmented connective tissue.
  • An enlarged diagram of the fovea is shown in the box.
Retinal Cell Organization
  • G - retinal ganglion cells
  • M - Müller cell
  • A - amacrine cell
  • B - bipolar cell
  • H - horizontal cell
  • R - rod
  • C - cone
Human Retina Histology
  • An H&E stained transverse section of human retina laminated layers.
  • The inner plexiform layer (IPL) contains the processes and terminals of bipolar cells, amacrine cells, and ganglion cells.
  • The processes of Müller glial cells fill all space in the retina that is not occupied by neurons and blood vessels.
  • The nuclei of the bipolar cells, amacrine cells, horizontal cells, and Müller glial cells are found in the inner nuclear layer (INL), and the nuclei of ganglion cells form the ganglion cell layer (GCL).
  • The outer plexiform layer (OPL) contains the processes and synaptic terminals of photoreceptors, horizontal cells, and bipolar cells.
  • The nuclei of the photoreceptors constitute the outer nuclear layer (ONL).

Links: Vision Development | Retina Development


<pubmed>20855501</pubmed>| PMC3101587 | JCB

Retina histology image - Swaroop and Zack (2002), published by BioMed Central PMID 12186651


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Note - Retinal Cell Organization and Human Retina Histology were flipped vertically and relabelled from original published image to match the orientation in The Eye. This is the ongoing issue of which way around the retina should be illustrated. For an introduction to this topic it is just easier to have it the same way around.

Cite this page: Hill, M.A. (2024, May 18) Embryology Eye and retina cartoon.jpg. Retrieved from

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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