About: http://webisa.webdatacommons.org/80763449

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	Convergence insufficiency, a binocular vision dysfunction, is an inability to focus both eyes simultaneously on a single point, such as a letter or word, for a sustained period of time.
http://www.w3.org/ns/prov#wasQuotedFrom	ontrackreading.com