*** Welcome to piglix ***

Retinas

Retina
Human eye cross-sectional view grayscale.png
Right human eye cross-sectional view, eyes vary significantly among animals.
Details
Artery central retinal artery
Identifiers
Latin Rēte
MeSH A09.371.729
Dorlands
/Elsevier
Retina
TA A15.2.04.002
FMA 58301
Anatomical terminology
[]

The retina (UK /ˈrɛtɪnə/ RET-i-nə, US /ˈrɛtnə, ˈrɛtənə/ RET-(ə-)nə, pl. retinae, /ˈrɛtin/; from Latin rēte, meaning "net") is the third and inner coat of the eye which is a light-sensitive layer of tissue. The optics of the eye create an image of the visual world on the retina (through the cornea and lens), which serves much the same function as the film in a camera. Light striking the retina initiates a cascade of chemical and electrical events that ultimately trigger nerve impulses. These are sent to various visual centres of the brain through the fibres of the optic nerve. Neural retina typically refers to three layers of neural cells (photo receptor cells, bipolar cells, and ganglion cells) within the retina, while the entire retina refers to these three layers plus a layer of pigmented epithelial cells.


...
Wikipedia

...