Assertion: eyelid | /r/CapableOf | maintain tear film
Facets:
Source sentences:
text: From an anatomical viewpoint, your eyelids protect the anterior surface of the globe from injury, aid in the regulation of light reaching your eyes, maintain tear film by distributing the protective and optically important tear film over the cornea during blinking, and they control tear flow by their pumping action on the conjunctival sac and lacrimal sac.