blue color blindness
MONDO:0008610Mondo
Findings
No curated finding names blue color blindness yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Tritanopia is an extremely rare form of color blindness characterized by a selective deficiency of blue vision.
Definition from the Mondo Disease Ontology (MONDO:0008610), read 2026-09-29. CC BY 4.0.
Features
8 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Abnormal retinal morphologyHPOHP:0000479
- Frequent (30% to 79% of cases)
- Color vision test abnormalityHPOHP:0030584
- Frequent (30% to 79% of cases)
- TritanomalyHPOHP:0000552
- Frequent (30% to 79% of cases)
- Pendular nystagmusHPOHP:0012043
- Occasional (5% to 29% of cases)
- PhotophobiaHPOHP:0000613
- Occasional (5% to 29% of cases)
- Reduced visual acuityHPOHP:0007663
- Occasional (5% to 29% of cases)
- Color vision defectHPOHP:0000551
- DyschromatopsiaHPOHP:0007641
Genes
1 gene
Germline variants in the gene encoding each protein, as classified by GenCC submitters, each in their own words. Limited, disputed and refuted submissions are listed too.
- OPN1SWHGNC:1012
- Strong · Labcorp Genetics (formerly Invitae) · Autosomal dominant · 2021
- Strong · PanelApp Australia · Autosomal dominant · 2025
- Supportive · Orphanet · Autosomal dominant · 2021
- Limited · Ambry Genetics · Autosomal dominant · 2024
Where it sits
Other names
5 names
Resolves to: blue color blindness
- Also called
- congenital tritanopiatritan color blindnesstritan colour blindnesstritan defecttritanopia