About: http://webisa.webdatacommons.org/390339599

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 refractive error, or refraction error, is an error in the focusing of light by the eye and a frequent reason for reduced visual acuity.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.ca