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What is the term for the tendency of one eye to turn upwards?

  1. Exophoria

  2. Hyperphoria

  3. Strabismus

  4. Esophoria

The correct answer is: Hyperphoria

The appropriate term for the tendency of one eye to turn upwards is hyperphoria. This condition specifically refers to a vertical misalignment where one eye is positioned higher than the other. It can occur in both the resting position and during gaze, resulting in a disruption of binocular vision. Recognizing hyperphoria is important for diagnostic and treatment purposes, as it can lead to symptoms such as double vision or eye strain if not addressed properly. The other terms provided refer to different conditions: exophoria describes a tendency for one eye to turn outward, strabismus is a general term for misalignment of the eyes, and esophoria indicates a tendency for one eye to turn inward.