What Is the Accurate Procedure for Performing a Confrontational Peripheral

What is the accurate procedure for performing a confrontational peripheral vision test?

A) Both examiner and patient cover the same eye and stare at each other while an object is brought into the line of sight.
B) Examiner and patient cover opposite eyes and stare at each other while an object is brought into the line of sight.
C) The patient is asked to discriminate numbers from a chart composed of colored dots.
D) The room is darkened and the patient is asked to identify colored blocks and shapes when they appear in the visual field.