8th Grade Cow Eye Dissection
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8th Grade Cow Eye Dissection |
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The retina is a thin, light sensitive membrane covering 2/3 of the back of the eye. It plays a huge role in our sight. It receives and then transmits images to the brain. The retina is covered with millions of little light receptors: cones and rods. The cones are sensitive to color and the rods are sensitive to the brightness and detail of light. First the light travels through the cornea. Then the light is projected onto the retina. The information received by the cones and rods then travels through the optic nerve to the brain, which then interprets what the object is. That is how we see.
The fovea is a tiny depression in the retina full of many light sensitive cells (cones). This is the most accurate and acute area of vision due to the extremely high density of cones. The fovea gives us the ability to see fine details.