In the Vis-a-Vis test, suppression is determined by which observation?

In the Vis-a-Vis test, suppression is determined by which observation?

• A. The patient’s eye that disappears indicates the examiner’s eye is suppressing.
• B. The examiner’s eye that disappears indicates the patient’s opposite eye is suppressing.
• C. Suppression is indicated when the patient blinks rapidly.
• D. Suppression is independent of which eye disappears.

Answer: (B)

In Vis-a-Vis testing, suppression is inferred from which of the examiner’s eyes disappears from the patient’s perception. If the patient no longer sees one of the examiner’s eyes, that disappearance tells you which eye of the patient is being suppressed—the eye opposite to the disappearing examiner eye. So the eye of the examiner that disappears indicates the patient’s opposite eye is suppressing. This direct link between the disappearing examiner eye and the suppressed patient eye is what the test uses to identify suppression. Blinking rapidly isn’t the method used to detect suppression, and suppression depends on which eye disappears rather than being independent of it.

In Vis-a-Vis testing, suppression is inferred from which of the examiner’s eyes disappears from the patient’s perception. If the patient no longer sees one of the examiner’s eyes, that disappearance tells you which eye of the patient is being suppressed—the eye opposite to the disappearing examiner eye. So the eye of the examiner that disappears indicates the patient’s opposite eye is suppressing. This direct link between the disappearing examiner eye and the suppressed patient eye is what the test uses to identify suppression. Blinking rapidly isn’t the method used to detect suppression, and suppression depends on which eye disappears rather than being independent of it.