About: http://webisa.webdatacommons.org/277019484

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	Shunts are made of materials such as polypropylene and silicone and depending on the type of glaucoma, the shunts may either be hollow to improve drainage or have valves to control the drainage.
http://www.w3.org/ns/prov#wasQuotedFrom	eyephysiciansoflongbeach.com