Are vergences a conjugate or disconjugate eye movement?

• A. Conjugate
• B. Vertical
• C. Horizontal
• D. Disconjugate

Answer: (D)

Vergence movements adjust how far apart the eyes are by changing the angle between the two lines of sight, which is essential for focusing at different distances. Because the eyes must adjust relative to each other to align on a near or far target, they move in opposite directions in terms of the binocular alignment, making vergence a disconjugate movement. For example, when converging, the eyes rotate toward the nose to bring the foveas onto a near target; when diverging, they rotate away to focus on a farther object. In contrast, conjugate (version) movements move both eyes in the same direction—left, right, up, or down—without changing the angle between the eyes. So the correct concept is that vergences are disconjugate.