The field of view is a term used to describe what something is seeing at any moment in time. While humans have about 180 degree field of view, some birds and insects have almost 360 degree field of view. You can find more information here: http://en.wikipedia.org/wiki/Field_of_vi...

Your field of view would be whatever you can see at any given moment. It would include both your direct forward view, as well as anything you can perceive in your peripheral vision.