The Parts of the Eye

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Across
  1. 7. diverging lens
  2. 9. an opening where light passes into eye
  3. 12. contains photoreceptors where image is formed
  4. 13. between lens and retina holds shape of eye
  5. 14. colour vision
  6. 15. nearsightedness; light rays converge before retina
  7. 16. converging lens
  8. 18. white protective layer on outside of eye
  9. 20. coloured muscled that controls size of pupil
Down
  1. 1. treatment for farsightedness
  2. 2. irregularly shaped cornea; light rays focus on more than one place on the retina
  3. 3. between cornea and lens holds shape of eye
  4. 4. treatment for nearsightedness
  5. 5. change the shape of the lens
  6. 6. farsightedness; light rays converge after retina
  7. 8. carries electrical impulses to brain of image
  8. 10. nutrient rich layer of eye
  9. 11. clear outer covering of eye that does 80% of focusing
  10. 17. convex, does fine focus
  11. 19. helps you see at night