Definition: a method of perimetry; the examiner compares the patient's visual fields with the examiner's own by facing the patient who has one eye covered and the other fixed on the corresponding (confronting) eye of the examiner. The examiner then holds a finger midway between them and moves it slowly in different directions until the patient fails to see it. In each instance the finger is moved again toward the original position until the patient can just see it.
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