About: http://webisa.webdatacommons.org/271680976

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	urface correction to at least partially adjust for errors including astigmatic and mean power errors; at least one surface exhibiting a change of base curve across the field of vision of the wearer. 76.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com