Problem
A. What is the function of the optic nerve? Where are the messages "translated" in the brain?
B. Where does the optic nerve attach to the eye? Why does it have this name?
C. Explain how rods and cones differ.
D. What is the function of the iris? How is the "hole" in the centre involved?
E. How can corrective lenses provide normal vision for an individual with a visual defect?
F. Horses and cows have eyes on the sides of their head, which means their visual fields overlap very little. What advantage would this kind of vision have over human vision?
G. Like humans, squirrels have eyes on the front of their head. The visual field of the squirrel's right eye overlaps with the visual field of its left eye. Why does a squirrel need this type of vision?
H. If students place a large piece of cardboard between their eyes, will they be able to READ two different books at the same time? Explain why or why not (try it).