1. What is the X-shaped structure that sits just below the brain’s ventral surface and represents the merging of the optic nerves from the two eyes? 
Select one: 
a. fovea 
b. iris 
c. lens 
d. optic chiasm 
2.________ disparity refers to the slightly different view of the world that each eye receives. 
A. binocular 
B. cyclopean 
C. monocular 
D. trichromatic