color blindness

inability or decreased ability to see colour, or perceive colour differences, under normal lighting conditions
MedicalCondition class_of_disease Q133696
color blindness
Shinobu Ishihara · Public Domain · Wikimedia
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color blindness

Summary

color blindness is a class of disease[1]. It ranks in the top 5% of class_of_disease entities by monthly Wikipedia readership (8,931 views/month).[2]

Key Facts

  • color blindness's instance of is recorded as class of disease[3].
  • John Dalton is named after color blindness[4].
  • color blindness is a type of vision disorder[5].
  • color blindness is a type of blindness[6].
  • color blindness is a type of disease[7].
  • color blindness's Commons category is recorded as Color blindness[8].
  • color blindness's topic's main category is recorded as Category:Color blindness[9].
  • color blindness's medical examination is recorded as Ishihara test[10].
  • color blindness's described by source is recorded as The Nuttall Encyclopædia[11].
  • color blindness's described by source is recorded as Small Brockhaus and Efron Encyclopedic Dictionary[12].
  • color blindness's described by source is recorded as Collier's New Encyclopedia, 1921[13].
  • color blindness's described by source is recorded as Armenian Soviet Encyclopedia, vol. 3[14].
  • color blindness's described by source is recorded as Meyers Konversations-Lexikon, 4th edition (1885–1890)[15].
  • color blindness's Stack Exchange tag is recorded as https://stackoverflow.com/tags/color-blindness[16].
  • color blindness's ICD-9-CM is recorded as 368.5[17].
  • color blindness's ICD-9-CM is recorded as 368.59[18].
  • color blindness's NCI Thesaurus ID is recorded as C3891[19].
  • color blindness's health specialty is recorded as ophthalmology[20].
  • color blindness's exact match is recorded as http://purl.obolibrary.org/obo/DOID_13399[21].
  • color blindness's exact match is recorded as http://identifiers.org/doid/DOID:13399[22].
  • color blindness's exact match is recorded as http://www.orpha.net/ORDO/Orphanet_98658[23].
  • color blindness's on focus list of Wikimedia project is recorded as WikiProject Medicine[24].
  • color blindness's on focus list of Wikimedia project is recorded as Wikipedia:Vital articles/Level/4[25].

Why It Matters

color blindness ranks in the top 5% of class_of_disease entities by monthly Wikipedia readership (8,931 views/month).[2] It has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[26] It is known by 59 alternative names across languages and contexts.[27]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . ncbi.nlm.nih.gov. ncbi.nlm.nih.gov. Provenance: wikidata.org.
  4. [6] . Prevalence of color blindness among school children in three primary schools of Gish -Abay town district, Amhara regional state, north-west Ethiopia. Retrieved . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . Disease Ontology. Retrieved . wikidata.org.
  16. [18] . Monarch Disease Ontology release 2018-06-29. Retrieved . wikidata.org.
  17. [19] . Monarch Disease Ontology release 2018-06-29. Retrieved . wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . Disease Ontology. Retrieved . wikidata.org.
  20. [22] . Identifiers.org. registry.identifiers.org. Provenance: wikidata.org.
  21. [23] . wikidata.org.
  22. [24] . wikidata.org.
  23. [25] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [26] . Wikidata sitelinks. wikidata.org.
  3. [27] . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). color blindness. Retrieved May 3, 2026, from https://4ort.xyz/entity/color-blindness
MLA “color blindness.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/color-blindness.
BibTeX @misc{4ortxyz_color-blindness_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{color blindness}}, year = {2026}, url = {https://4ort.xyz/entity/color-blindness}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): color blindness — https://4ort.xyz/entity/color-blindness (retrieved 2026-05-03)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 7d ago · Twofivesixbot bot · 2026-05-17 view diff on Wikidata ↗
    Medical examination Ishihara test
    Named after John Dalton
    Aliases
    Named after
    + 10 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-qualifiers:1||1|5 */ [[Property:P2347]]: 4645, mv to monolingual text names on YSO statements"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.