Eyes

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Across
  1. 2. Opening of the eye that allows light to enter
  2. 4. Color substance that are used to color other materials
  3. 7. Three colors that combine to make any other color
  4. 8. Transparent cover of the eye
  5. 9. cells that allow you to see dim light
  6. 10. Layer of cells that lines the inside of the eyeball. It is made up of rods and cones.
  7. 12. Eye is too long, which causes a person to see objects in the distance blurry
Down
  1. 1. sends a signal to the brain along a short thick nerve
  2. 3. Any two colors that combine to form white light
  3. 5. Opening of the eye that allows light to enter
  4. 6. Eye is too short, which causes a person to see objects close up as blurry
  5. 11. cells that allow you to see color