Acts upstream of or within visual perception. Predicted to be located in extracellular region. Predicted to be active in extracellular matrix and extracellular space. Used to study congenital stationary night blindness 1A. Human ortholog(s) of this gene implicated in congenital stationary night blindness 1A and night blindness. Orthologous to human NYX (nyctalopin). [provided by Alliance of Genome Resources, Apr 2022]