Functions of the Human Eye

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Across
  1. 2. Carries electrical signals to the brain.
  2. 5. Clear, moist outer covering of the eye.
  3. 6. Focuses on the object by getting thicker or thinner.
  4. 8. Coloured part of the eye.
  5. 9. Drains the tears that keep the eye moist and clean.
  6. 10. The inside lining of the back of the eye that changes light waves into electrical signals.
  7. 12. Dark opening in the iris which allows light to enter the eye.
  8. 13. Protects the eye and spreads tears to keep the eye moist and clean.
Down
  1. 1. Small space between the cornea and iris.
  2. 3. Part of the clear conjunctiva that covers the iris and pupil.
  3. 4. Clear substance that supports the shape of the eye.
  4. 7. Makes the lens thicker or thinner.
  5. 11. White part of the eye.