Oligocone trichromacy

What is Oligocone trichromacy?

A rare non-progressive form of cone photoreceptor dysfunction syndrome characterized by reduced visual acuity, normal fundus appearance and absent or reduced cone responses on electroretinography. In contrast to all other forms of cone dysfunction color vision is normal.

Other condition names

  • Oligocone syndrome

Inheritance type

Autosomal dominant, Autosomal recessive


  • Worldwide: <1 in 1,000 000

Age of Onset

  • Adolescent
  • Adult
  • Childhood
  • Infancy
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