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Confrontation method

From Biology-Online Dictionary | Biology-Online Dictionary
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Confrontation method

a method of perimetry; the examiner compares the visual fields of the patient with his own by facing the patient who has one eye covered and the other fixed upon the corresponding (confronting) eye of the examiner. The examiner then holds his finger midway between the patient and himself 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 it is just seen by the subject.