Assertion: cornea's surface | /r/HasProperty | gained significant popularity
Facets:
value: in the last 20 years
type: TEMPORAL
Source sentences:
text: Ocular surface grafting via amniotic membrane (AM) application has been reported in ophthalmic literature as far back as 1940, but has gained significant popularity in the last 20 years as cryopreserved and dehydrated products have become widely available for in-office use.12