About: http://webisa.webdatacommons.org/41834694

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	Improvement was defined by several measures, including the ability to read a minimum of two additional lines on the standard eye chart or expansion of at least 25% in visual field size.
http://www.w3.org/ns/prov#wasQuotedFrom	sciencedaily.com