Congenital Stationary Night Blindness

(CSNB) is a rare progressive retinal disorder. It has two forms, complete, also known as type-1 (CSNB1), and incomplete, also known as type-2 (CSNB2), depending on severity. In the complete form (CSNB1), there is no measurable response to light, whereas this response is measurable in the incomplete form.

The vision problems associated with this condition are congenital, which means they are present from birth. They tend to remain stable (stationary) over time.

The prevalence of this condition is unknown. It appears to be more common in people of Dutch-German Mennonite descent. However, this disorder has been reported in families with many different ethnic backgrounds. The incomplete form is more common than the complete form.

What are the symptoms of Congenital Stationary Night Blindness?

  • Impaired night vision.
  • Reduction of Visual acuity (VA), the acuteness or clearness of vision.
  • Myopia commonly known as being shortsighted.
  • Involuntary movement of the eyes.
  • A squint.

  • What causes Congenital Stationary Night Blindness?

  • CSNB is caused by gene mutations
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    2 thoughts on “Congenital Stationary Night Blindness

    1. My nephew was diagnosed with Congenital Stationary Night Blindness and other eye issues at the age of 2, he is now 5, were looking for other people who have experience/information with this disorder to join a face book group called:
      Congenital Stationary Night Blindness.
      This group is not just for people affected by this condition anyone can join.
      We have searched the internet for other people with this condition and came up with very little.
      Our hopes are to find someone with this condition, who can share their stories and tips on how they deal with day to day activities especially in the dull winter months.
      Thank you for taking time to read this.

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