Assertion: bilberry | /r/CapableOf | improve vision
Facets:
Source sentences:
text: Bilberries have been shown to protect tissue, assist in digest, and improve vision, circulation, skin appearance and brain health.
text: During World War II, British Royal Air Force pilots ate bilberry preserves before night missions in the belief that bilberry would improve their vision.
text: Bilberry is also known to help preserve and even improve vision.