Trait
Day blindness
Clinical name: Hemeralopia
A visual defect characterized by the inability to see as clearly in bright light as in dim light. The word hemeralopia literally means day blindness.
Summary
- Body system
- Abnormality of the eye
Reference genomeGRCh38hg38
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Get my Genome Test10 genes linked to Day blindness
Changes in these genes cause rare conditions in which Day blindness is seen. Most people with this trait have none of those conditions, and a gene on this list says nothing about anyone's own genome.
| Gene | How often it is seen | Conditions |
|---|---|---|
| CNGA3cyclic nucleotide gated channel subunit alpha 3 | Always | In 1 condition |
| SCO2synthesis of cytochrome C oxidase 2 | Always | In 1 condition |
| TULP1TUB like protein 1 | Always | In 1 condition |
| CEP78centrosomal protein 78 | Often (30–79%) | In 1 condition |
| IFT172intraflagellar transport 172 | Often (30–79%) | In 1 condition |
| ATXN7ataxin 7 | Sometimes (5–29%) | In 1 condition |
| GRM6glutamate metabotropic receptor 6 | Not recorded | In 1 condition |
| GUCY2Dguanylate cyclase 2D, retinal | Not recorded | In 1 condition |
| NR2E3nuclear receptor subfamily 2 group E member 3 | Not recorded | In 1 condition |
| NYXnyctalopin | Not recorded | In 1 condition |
How often is among people with one of the gene's conditions, the most often across them, as the Human Phenotype Ontology records it. These pages describe traits and the research behind them; they are not a diagnosis, and a doctor or genetic counsellor is the person to ask about symptoms.
Broader traits
Where this comes from
- The Human Phenotype Ontology, release 2026-09-01: the trait, its names, its definition and the genes linked to it. Find out more at hpo.jax.org.
- Data release 2026.10.16-c6eea6bf.
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