# blindness

> complete or nearly complete lack of vision; visual acuity worse than 3/60

**Wikidata**: [Q10874](https://www.wikidata.org/wiki/Q10874)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Blindness)  
**Source**: https://4ort.xyz/entity/blindness


## References

1. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=36838)
2. Disease Ontology
3. Symptom Ontology
4. Monarch Disease Ontology release 2018-06-29
5. Nuovo soggettario
6. Freebase Data Dumps. 2013
7. [Identifiers.org](https://registry.identifiers.org/registry/doid)
8. Human Phenotype Ontology release 2018-03-08
9. Quora
10. Great Norwegian Encyclopedia
11. National Library of Israel
12. KBpedia