About: http://webisa.webdatacommons.org/168136634

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	Vision can be affected as one ages or by illness, such as glaucoma, cataracts, macular degeneration, diabetes, or stroke or other brain injury or head trauma.
http://www.w3.org/ns/prov#wasQuotedFrom	firelands.com