Here are some items that may make your teaching vision science easier.
One is a set of animations that describe spatio-temporal receptive
fields of visual neurons in the LGN and the striate cortex.
Space-time inseparability and direction selectivity of neurons
shouldn't be hard concepts to grasp, once you see these animations.
Most of the data come from our own recordings.
The other is a set of files from which you can make a slide or print
of the Campbell-Robson contrast sensitivity figure. You probably
have had a hard time making a good slide of it from most text book
renditions for your lecture. It's now easy to make a new one using
a film recorder or a dye sublimation printer.
They are available from:
http://totoro.berkeley.edu/teaching/
Izumi Ohzawa
Vision Science/Optometry
University of California, Berkeley.