How is an image projected on the retina of your eye?

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The cornea, which covers the eye as well as the lens are responsible for bending the light that reflects off of objects we observe, by the process of refraction. The light must pass into the eye through the pupil. Small muscles attached to the eye lens are constantly changing the...

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The cornea, which covers the eye as well as the lens are responsible for bending the light that reflects off of objects we observe, by the process of refraction. The light must pass into the eye through the pupil. Small muscles attached to the eye lens are constantly changing the curvature of the lens. This allow us to see the world as a sharply focused image. The shape of the lens is biconvex. The image that appears on the retina is upside down and small. Nerves on the retina stimulate an impulse to the brain via the optic nerve, where the image is seen as right side up. 

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