EYEBALL

EYEBALL
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  •  Welcome to science! Today we'll be learning about the eyeball.
  • THE HUMAN EYE By: Erin Roach
  • THE HUMAN EYE
  • This is what the human eye looks like. A little bit creepy.
  • Iris
  • Conjuctiva
  • Cornea
  • Pupil
  • Lens
  • Sclera
  • Macula
  • Vitreous
  • Optic Nerve
  • Retina
  • The parts of the eye are: Iris: The part of your eye that has colour in it. Pupil: The black circle within the Iris. This is what allows light to get into your eye. Lens: A clear plate directly behind the iris that bends light onto the retina. It changes shapes based on how far away you’re focused on. Cornea: Small “dome” over iris that serves a similar purpose as the lens. Sclera: The white part of your eye. Vitreous: The semi-solid substance that fills empty space within your eye. Conjunctiva: A small layer covering your visible sclera and eyelid edges. Optic Nerve: Connection from what your eyes see to the brain. Retina: Images are reflected onto the retina, which then helps decipher the image and “prepare” it to be sent to the brain. Macula: Helps to see what’s directly before you, like a book, or your desk at school.
  • Presbyopia: When people get older, their lens isn't able to move/change as much as it used to, making words in small fonts hard to read.
  • Hyperopia (farsightedness): When people can't form images well enough (a problem with their lens), they may not be able to see close-up very well.
  • Myopia (nearsightedness) : When people can't form images correctly due to a lens problem, they may not be able to see farther distances very well.
  • In most cases, these problems can be fixed with contact lenses, glasses, or even surgery! .....
  • RINGGGGGG
  • OH! That went quickly! Class dismissed! Have a great weekend!
  • THE END
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