How do eyelids help the eyeballs?

Related questions

1. What is 4th nerve palsy?
2. Is Vaseline good for dry eyelids?
3. Why do polar bears have 3 eyelids?
4. What causes eye palsy?
5. Do humans have a third eyelid?
6. Do reptiles blink sideways?
7. Do humans have two eyelids?
8. How many minutes a day do you spend blinking?
9. Do your eyelids have muscles?
10. Does blepharitis go away on its own?

Tags

1. #eyelid
2. #cornea
3. #sensitive
4. #tears
5. #eyeball
6. #evenly
7. #eyelids
8. #spread
9. #front
10. #right
11. #loops
12. #tissues
13. #conjunctiva
14. #blinked
15. #cover
16. #around
17. #protects
18. #moist
19. #surface
20. #underneath