I.5.9 Optical Crossword

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Across
  1. 1. This nerve carries the nerve messages to the brain from the eye.
  2. 6. What is the white part of the eye called?
  3. 8. This gland makes tears
  4. 11. What protects the eye from dust and dirt?
  5. 12. It has millions of cells that take the light the eye receives and changes them into nerve signals the brain uses to understand what we see.
  6. 13. This body gives the eye it's shape
  7. 14. An opening in the iris that lets light go through controlling the light depending on conditions.
  8. 15. What protects the eye?
Down
  1. 2. This helps the eye focus as light makes its way through.
  2. 3. These sense millions of colors from three colors: green, red, blue.
  3. 4. What voluntary and involuntary action protects the eye?
  4. 5. This duct drains the tears from your eyes
  5. 7. It focuses light rays on the back of the eyeball.
  6. 9. It controls how much light goes through the pupil using muscles
  7. 10. It sees greys and black and white and gives us the form or shape of what we see