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How The Eye Works

Think of your eye as a camera capturing the world around you. When you look at something, light reflects off of that object and enters your eye, first through the clear protective surface called the cornea,  then through the pupil, or hole in your iris,  that expands and retracts to control the amount of light entering, much like a camera's aperture.

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Think of your eye as a camera capturing the world around you. When you look at something, light reflects off of that object and enters your eye, first through the clear protective surface called the cornea, then through the pupil,  or hole in your iris, that expands and retracts to control the amount of light entering, much like a camera's aperture.

 

 

References

  1. American Optometric Association. How your eyes work. http://www.aoa.org/x6024.xml. Accessed October 16, 2010.
  2. American Optometric Association. Activity Sheet 3: Focus on Seeing. http://www.aoa.org/x6033.xml. Accessed October 16, 2010.
  3. Emory University Eye Center. Ophthalmology Terms: ciliary muscle. http://www.eyecenter.emory.edu/ophthalmology_terms.htm. Accessed October 16, 2010.
  4. Oracle ThinkQuest Education Foundation. Disorders of the Eye. http://library.thinkquest.org/27940/disorderf/disorder-1.html. Accessed October 16, 2010.