Eye sight

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Across
  1. 3. cloudingnof the eyes
  2. 5. Vision test to measure visual acquits
  3. 6. Clear front of eye
  4. 7. for seeing at night
  5. 8. someone who prescribes glasses
Down
  1. 1. causes blurred vision
  2. 2. Inability to see at night
  3. 4. Sensitive layer at the back of eye
  4. 9. Protective covering of the eye