About: http://webisa.webdatacommons.org/150256934

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	Early IOLs made from polymers such as polymethylmethacrylate (PMMA) were rigid and required a large incision (greater than 6 mm) in order to be inserted in the eye.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca