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Vision Concept Map - Coggle Diagram
Vision Concept Map
Lens
After passing through the pupil, light crosses the lens
a curved, transparent structure that serves to provide additional focus.
The lens is attached to muscles that can change its shape to aid in focusing light that is reflected from near or far objects.
the lens will focus images perfectly on a small indentation in the back of the eye known as the fovea, which is part of the retina
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Rods
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they are involved in our vision in dimly lit environments as well as in our perception of movement on the periphery of our visual field
Cornea
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a barrier between the inner eye and the outside world,
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Pupil
the small opening in the eye through which light passes,
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The pupil’s size is controlled by muscles that are connected to the iris, which is the colored portion of the eye.
Blind Spot
Even when light from a small object is focused on the blind spot, we do not see it. We are not consciously aware of our blind spots for two reasons:
First, each eye gets a slightly different view of the visual field; therefore, the blind spots do not overlap.
Second, our visual system fills in the blind spot so that although we cannot respond to visual information that occurs in that portion of the visual field, we are also not aware that information is missing.
Optic Nerve
Rods and cones are connected (via several interneurons) to retinal ganglion cells. Axons from the retinal ganglion cells converge and exit through the back of the eye to form the optic nerve
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Optic Chiasm
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At the point of the optic chiasm, information from the right visual field (which comes from both eyes) is sent to the left side of the brain, and information from the left visual field is sent to the right side of the brain.