Board Thread:Boruto Discussions/@comment-31377229-20180125162054/@comment-3568954-20180202050035

@legionzero

no, the average person has a 170 degree visual arc, but there are people with higher or lower arc's the large the total arc the larger the center line visual arc, so it would stand to reason that a byakugan user's enter line arc would be higher than a normal persons 70 degree center line arc. this also all hinging on the assumption that the byakugan's visual arc is dependent on things such as the shape of the eye's cone.

i personally have always believed the byakugan's vision had nothing to do with the photoreceptor in the eye, when the hyuga activates the byakugan the veins in the side of their head activate, this has always led me to believe that the veins link the byakugan to the tenketsu in the hyuga's body causing the tenketsu to act like photoreceptor

if thats the case than no tunnel vision would occur at all, either way we don't know which is the case, in both case's the tunnel vision would be negligible