THE STRUCTURE OF THE EYE

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Across
  1. 2. focusing begins here
  2. 3. what nerve cells allow black and white vision in dim light
  3. 4. regulates the size of the eye
  4. 6. what nerve transmits impulses to the brain
  5. 9. contains no rod or cone cells
  6. 13. what nerves cells allow colour vision in bright light
  7. 15. the light sensing nerve cells located in the retina
  8. 16. center of the retina that processes sharp, clear straight-ahead vision.
Down
  1. 1. contains receptors for vision
  2. 2. absorbs stray light
  3. 5. an area of densely packed cone cells where vision is most acute
  4. 7. controls the shape of the lens and holds it in place
  5. 8. covers the sclera and cornea and keeps the eye moist
  6. 10. clear jelly-like substance that fills the eye from the lens to the back of the eye
  7. 11. protects and supports the eye
  8. 12. admits light
  9. 14. focuses the light rays