Hi Harriet,
I think this one is actually a pretty easy experiment. Assuming you have normal vision, try closing your right eye. What do you see? That will be representative of someone with right eye blindness. When I close one eye, I still see some of the opposite visual field.
In the slides detailing patterns of visual field deficits, the two circles in the right column represent the left and right EYES not the left and right VISUAL FIELDS. So, someone with a right optic nerve lesion would lose vision in their right EYE (not have a right visual field cut). On those slides, patterns 3, 4, and 7 show visual field cuts.
Chrissy