About: http://webisa.webdatacommons.org/207640136

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	A cataract is a clouding of the eye lens, which focuses light on the back of the eye.
http://www.w3.org/ns/prov#wasQuotedFrom	clinicaltrials.gov