Hemianopsia, or hemianopia, is a visual field loss on the left or right side of the vertical midline. It can affect one eye but usually affects both eyes. Homonymous hemianopsia (or homonymous ...

leading to bitemporal hemianopsia (loss of vision in the outer half of both eyes).” Brain tumors in the temporal or occipital lobes can cause visual distortions, such as seeing wavy lines or ...