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Scientific Literacy Words for the Eye

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Question
Answer
Transparent front surface that protects the eye. Also acts as a lens to help focus light rays   Cornea  
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An opening through which light enters the inside of the eye. Enlarges and shrinks to let in different amounts of light.   Pupil  
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A ring of muscle that contracts and expands to change the size of the pupil.   Iris  
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A layer of cells that lines the inside of the eyeball. Made up of tiny, light-sensitive cells called Rods and Cones.   Retina  
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Cells that contain a pigment that responds to small amounts of light. Allow you to see in dim light.   Rods  
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Cells that respond to color, detects red, green, and blue light.   Cones  
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Can see nearby things clearly, but objects at a distance are blurred. (Eyeball is to long)   Nearsighted  
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Can see distant objects clearly, but nearby objects appear blurry. (Eyeball is to short)   Farsighted  
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