Final answer:
Confrontation testing is the correct method for assessing visual fields, as it establishes the boundaries of peripheral vision and differs from the Snellen chart, which measures visual acuity.
Step-by-step explanation:
To carry out a visual fields assessment, Option 2: Perform confrontation testing is the correct method. This involves the examiner establishing the boundaries of peripheral vision by holding their hands out to either side and asking the patient when the fingers are no longer visible without moving their eyes to track them. Other options such as the Snellen chart assess visual acuity, and tests like the Weber and Whisper tests are used for assessing auditory function, not vision.