Our eyes, like any of our organs are vital for us to go on with our everyday life. As we age, some of us might develop cataract which could seriously damage our vision. Much like a camera, light rays enter the eye, passing through the cornea, the aqueous humor (a transparent fluid in the front of the eye), followed by the pupils and into the lens. The lens bend these rays to focus objects onto the retina lining the back of the eye. It is from here that images pass through the retina cells into the optic nerve and finally to the back of the brain which process these images.

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