the clear tissue that covers the front of the eye and protects the eye
an opening in the eye which lets the light enter the eye
a circular structure that surrounds the pupil and regulates the amount of light entering the eye (comes in different colors)
a flexible structure that focuses the light
a layer of receptor cells that line the back of the eye
can see nearby objects clearly
can see object far away clearly
membrane that vibrates when sound strikes it
snail-shaped tube that is lined with receptor cells that respond to sound
structures in your ear that are responsible for your sense of balance
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