As I know that night blindness belongs to recessive genetic eye disease with a 35% chance of inheritance. Night blindness doesn't affect your life seriously, so you don't have to worry about it. I suggest you to eat more carrots and take more vitamins.
Congenital night blindness, also known as retinitis pigmentosa, is an inherited disorder caused by a recessive disease-causing gene on the X chromosome. For the treatment of this disease, traditional method only bases on using special medicine, but the effect is not ideal.