- published: 09 Dec 2015
- views: 40565
The retina (UK /ˈrɛtɪnə/ RET-i-nə, US /ˈrɛtᵊnə/ RET-(ə-)nə, pl. retinae, /ˈrɛtiniː/; 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.
In vertebrate embryonic development, the retina and the optic nerve originate as outgrowths of the developing brain, so the retina is considered part of the central nervous system (CNS) and is actually brain tissue. It is the only part of the CNS that can be visualized non-invasively.
The retina is a layered structure with several layers of neurons interconnected by synapses. The only neurons that are directly sensitive to light are the photoreceptor cells. These are mainly of two types: the rods and cones. Rods function mainly in dim light and provide black-and-white vision, while cones support daytime vision and the perception of colour. A third, much rarer type of photoreceptor, the intrinsically photosensitive ganglion cell, is important for reflexive responses to bright daylight.
Standing alone inside a frantic crowd with incriminating facts in hand.
An imperative vision of satisfaction.
My overwhelmed pupils contain illegible mortification.
I feel the numbness of an orgasm as I leave my entire body.
Endorphins are released, generating complete ecstasy.
Standing alone inside a frantic crowd with incriminating facts in hand.
An imperative vision of satisfaction.
My overwhelmed pupils contain illegible mortification.
I feel the numbness of an orgasm as I leave my entire body.
Inside my cerebral cortex lies an ultimate pleasure better than any sensation.
Turned into a powerless corpse, I succumb.
My brain's mechanical capacity has clearly stopped running.
Restrictions of flesh…
A magenta fluid escorts my soul to a perfect and reflexive coma
As I decline within this ideal trance.
I can no longer feel pain.
I only see my blackened blood flowing out of my veins, my carnal shroud.
I'm not furious about what you've wrecked.
In fact, I want to thank you, I want to love you.
My blood flows.
But at this instant, I'm not furious.
No need to say a word.