About: http://webisa.webdatacommons.org/200139751

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	The formula helps protect people's central vision, which is needed for reading, driving, recognizing faces and other daily activities.
http://www.w3.org/ns/prov#wasQuotedFrom	geteyesmart.org