Early-onset non-progressive night blindness

What it means

A usually nonprogressive (i.e., stationary) form of night blindness with early (presumed to be congenital) onset.

Congenital stationary night blindness is the result of either dysfunction of the rod photoreceptors or synaptic transmission. This term was previously called Congenital stationary night blindness. The terms hemeralopia and nyctalopia are deliberately not used, as they mean different things in different languages. The fundus can be either normal or abnormal, such as fundus with white dots in fundus albipunctatus, or a golden sheen in light-adapted state in Oguchi disease, which disappears with dark-adaptation (Mizuo-Nakamura phenomenon).

Rare diseases that can present with this12

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Congenital night blindness · Congenital stationary night blindness · Night blindness, congenital · Night blindness, congenital stationary · Night blindness, congenital stationary, complete · Night blindness, stationary