About: http://webisa.webdatacommons.org/401146091

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 sphere measures how near-sighted or far-sighted you are, and the cylinder is a measurement of your astigmatism.
http://www.w3.org/ns/prov#wasQuotedFrom	northshore.org