THE EYE

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Across
  1. 1. Has many nerve endings
  2. 2. Only contains cones
  3. 4. Produce tears
  4. 5. Involved in the pupillary mechanism
  5. 8. Where most refraction of light occurs
  6. 11. Where the optic nerve leaves the eye
  7. 12. Responsible for black and white vision
  8. 14. Sends nervous impulse to the cerebrum
  9. 15. Closes to spread tears over the eyeball
  10. 17. Hold lens in place
  11. 19. Keeps the retina against the back of the eye
Down
  1. 1. Secretes aqueous humour
  2. 3. duct Where tears leave the eye to enter the nose
  3. 6. Contains photoreceptors
  4. 7. Where the extrinsic muscles attach
  5. 9. Maintains the shape of the anterior chamber
  6. 10. Allows light into the back of the eye
  7. 13. Contracts or relaxes to allow the eye to accommodate
  8. 16. Used for fine focusing of light rays
  9. 18. Prevents internal reflection of light
  10. 20. Have antibacterial properties