Show VisionHow the Eye and the Brain Work Together(Blind Babies Foundation)
Nearsightedness (Myopia), and Farsightedness (Hyperopia) Near and farsightedness are the result of varying- shaped eyeballs that cause light to focus in front of or behind the retina. Perfect Vision Light is focused from near and far objects exactly on the retina.
Compilation by Blind Babies Foundation, 1998 Aqueous – a clear watery fluid that fills the space between the cornea and the vitreous. It is responsible for nourishing the cornea, iris, lens, and maintaining the intraocular pressure. Canal of Schlemm – is responsible for moving the aqueous from the front chamber in the eye through aqueous veins into the bloodstream. Ciliary Body – is made up of ciliary muscle which helps the accommodation of the lens and controls the intraocular pressure of the eye. It is also where the aqueous is made. Cones – light sensitive receptor cells mostly found in the central part of the retina. It is responsible for sharp visual acuity and the discrimination of color. Conjunctiva – a transparent mucous membrane that covers the outer surface of the eyeball except for the cornea. It also lines the inner surface of the eyelid. Cornea – the clear cone over the front part of the eye. It is responsible for most of the optical power of the eye. Choroid – a layer of the eye found between the retina and the sclera. It contains major blood vessels and provides nourishment to the outer layers of the retina. Fovea – is located in the center of the macula. It provides the sharpest vision. Iris – a colored circular muscle that gives us the color of our eyes. It is responsible for controlling the amount of light that gets into the eye. Lens – is responsible for bringing rays of light into focus on the retina. It is a clear oval structure suspended behind the iris which can contract and expand as needed to provide additional focusing power. Macula – a small central area of the retina responsible for fine central visual acuity. Optic Nerve – carries the light impulses for sight from the retina to the brain. Retina – the most active area of the eye where the rods and cones are found. These receptors pick up the bits and pieces of the visual signals and transport them to the optic nerve for transmission to the brain. Rods – light sensitive receptor cells mostly found in the peripheral part of the retina. They are responsible for night vision. Sclera – the protective outer layer of the eye. Vitreous – a clear jello- like substance between the lens and the retina that provides the structural support to the eye. BLIND BABIES FOUNDATION 1814 Franklin Street, 11th Floor Oakland, CA 94612 (510) 446-2229 www.blindbabies.org What part of the eye converts light into neural signals?When light hits the retina (a light-sensitive layer of tissue at the back of the eye), special cells called photoreceptors turn the light into electrical signals. These electrical signals travel from the retina through the optic nerve to the brain. Then the brain turns the signals into the images you see.
What part of the eye receives light converts light into neural signal and sends it to the brain for integration?Finally, the light reaches the retina. This is the light-sensitive nerve layer that lines the back of the eye. Here the image is inverted. The optic nerve is then responsible for carrying the signals to the visual cortex of the brain.
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