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<http://webisa.webdatacommons.org/250900557>	<http://www.w3.org/ns/prov#value>	"But other factors, such as optic nerve blood supply and nutrition, may also produce optic nerve damage." .
<http://webisa.webdatacommons.org/prov/135552732>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/250900557> .
<http://webisa.webdatacommons.org/250900557>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<chihealth.com> .