There are a few characters in the franchise with only one Byakugan, such as Ao or (presumably) Boruto. I've recently been wondering what the difference in abilities is between a single Byakugan and a double Byakugan. For example, would you only be able to see a 180 degree field of vision with that Byakugan, or would you be able to see a nearly 360 degree field but with half the range? Has this ever been officially answered?
It grants near 360° vision, Ao keeps his Byakugan covered sometimes when he activates it, the eye's power is allowing it's weilder to watch their back even though the person is not directly looking through the said eye. Byakugan has blind spot so it cannot grant perfect 360° vision and the person can see chakra pathway system.