Fig. 1.

Schematic demonstrating the subcortical visual pathway structures evaluated in dementia with Lewy bodies (DLB) and Alzheimer’s disease (AD). Shaded areas are subject to both neurodegenerative pathology (Lewy bodies in DLB or tau in AD) and neuronal loss/atrophy. Partially shaded areas are subject only to neuronal loss. Note that secondary visual areas subject to degeneration in DLB, superior colliculus and pulvinar, also project to primary visual structures, consistent with their regulatory roles.