What is a Esterman Field Binoculars Test?

I'm not an ophthalmologist and have never hear of this test before so all I can do is provide you a reference to what it's all about. Like I said, it's a method that Dr. Esterman developed to enhance visual field testing for a certain group of patients/subjects (whether for driving or otherwise), but I couldn't even begin to describe what it's all about. I'll include a reference to the Dr. Esterman's article which describes it in detail