What is Achromatopsia?

A rare autosomal recessive retinal disorder characterized by color blindness, nystagmus, photophobia, and severely reduced visual acuity due to the absence or impairment of cone function.

Other condition names

  • ACHM
  • Complete or incomplete color blindness
  • Pingelapese blindness
  • Rod monochromacy
  • Rod monochromatism
  • Total color blindness

Inheritance type

Autosomal recessive


  • Worldwide: 1-9 in 100,000

Age of Onset

  • Infancy
  • Neonatal
Orphadata: Free access data from Orphanet. © INSERM 1999. Available on "". Data version 1.3.16 / 4.1.7.