About: http://webisa.webdatacommons.org/64453009

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	Since a hydrogel is mostly water and the index of refraction of water is approximately 1.3, the index of refraction of the implant should be at least 1.3.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr