The eye

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Across
  1. 2. Part of eye that controls how much light goes into the eye
  2. 3. Power of seeing
  3. 5. Scientific study of sight and the behaviour of light
  4. 7. Organ used to see
  5. 8. Coloured part of the eye
  6. 10. Cell in the retina that provides colour vision and central vision
Down
  1. 1. Makes things visible
  2. 3. You have 5 sight is one
  3. 4. Nerve layer at the back of the eye that sends impulses to the brain
  4. 5. Part if your body, eye is one of them
  5. 6. Transparent structure inside the eye that focuses light rays onto the retina.
  6. 9. Cell in the retina that provides side vision and ability to see in dull light