Contact your eye specialist if you experience symptoms of trochlear nerve palsy. They often include vision changes that worsen when you look down. These include blurry or double vision.
Tilting your head up and to the side may help you compensate for the vision changes. But this posture strains neck muscles and can become painful.
Other concerning symptoms that need medical attention include:
- Misalignment of the eyes (strabismus).
- Esotropia, a form of strabismus in which one or both eyes turn inward (crossed eyes).
- Hypertropia, a form of strabismus in which both eyes turn upward.
- Midfacial hypoplasia, which occurs with congenital fourth nerve palsy and distorts facial features, including the eyes.