"Dogs have binocular vision over about 80 degrees of their visual field, which is enough for good quality binocular vision. This does vary some by breed, with collies probably having a smaller area of binocular vision than a golden retriever due to the placement of the eyes and length of the nose. Dogs have dichromatic vision, meaning they see in only two colors, which might be confusing your colleague. I have a friend who is blind in one eye who can still catch Frisbees pretty well, so I'm not sure that binocular vision is essential for tasks like this but dogs do have binocular vision normally and should have good depth perception"
Vision- How Dogs See