Light

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Across
  1. 1. deflect light at a certain angle
  2. 4. a layer at the back of the eyeball sensetive to light
  3. 7. you can see through it
  4. 8. a flat, coloured, ring-shaped membrane behind the cornea
  5. 9. the transparent layer that forms at the front of the eye
Down
  1. 2. you can see through it
  2. 3. you can't really see through it
  3. 5. nerve each of the second pair of cranial nerves, transmitting impulses to the brain from the retina at the back of the eye
  4. 6. transparent material with curved sides