Predicted to enable phosphatidylinositol bisphosphate binding activity. Acts upstream of or within optokinetic behavior. Is expressed in optic vesicle; otic vesicle; pericardial region; pronephric duct; and sensory system. Human ortholog(s) of this gene implicated in Bothnia retinal dystrophy; Newfoundland cone-rod dystrophy; fundus albipunctatus; night blindness; and retinitis pigmentosa. Orthologous to human RLBP1 (retinaldehyde binding protein 1).