PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • During a vitrectomy the surgeon makes three small ports in the eye wall: one for an infusion of fluid to maintain the eye???s shape, one for a small fiber-optic light, and one for an instrument such as forceps, a laser probe, or a vitrector which removes the vitreous gel.
http://www.w3.org/ns/prov#wasQuotedFrom
  • improveyourvision.com