<prompt> Not a common cause of night blindness:CataractRPOguchi diseasePathological myopia  <response>: Cataract is not a common cause of night blindness. Other causes are more recognized causes. Causes of Night Blindness Vitamin A deficiency first symptom is red-green differentiation anomaly Pathological myopia Tapetoretinal degenerationseg. Retinitis pigmentosaRP Familial congenital night blindness Oguchis disease 