The Eye
The eye collects visual information and transmits it to the brain for processing. Essentially, the human eye looks and the brain tells us what we are looking at.
The lens and cornea help focus the light on the part of the retina called macula. The iris assists the cornea and lens in focusing light, but also controls the amount of light entering the eye. The retina converts the information to signals that are carried to the brain by the optic nerve for processing. When all the components are working properly we enjoy sight.
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