The Eye

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Across
  1. 3. used to adjust the thickness of the lens
  2. 5. this muscle contracts to dilate our pupils
  3. 8. tough and white outer layer of the eye
  4. 9. where the sensory neurones leave the eye
  5. 11. the receptors that are able to detect coloured light
  6. 13. coloured muscles that adjust the size of the pupil
  7. 14. shape of the len
  8. 15. region of the retina where there are no light receptors
  9. 18. in bright light the pupil does this
Down
  1. 1. area of the retina with a high concentration of cones
  2. 2. attached the lens to the ciliary muscles
  3. 4. the receptors that work best in dim light conditions
  4. 5. the bending of light as it passes through the eye
  5. 6. the ciliary muscles relax when we are looking at these objects
  6. 7. transparent section of the sclera
  7. 10. an action that is rapid and involuntary
  8. 12. the layer of cells containing light receptors
  9. 16. the hole in the iris that allows light to enter the eye
  10. 17. dark layer of the eye where blood vessels are found