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The H-test is a standard eye movement exam used to evaluate ductions and versions. The examiner moves a target in an H-shaped pattern. This allows assessment of each eye muscle individually and together. It helps detect weakness, restriction, or nerve involvement. The test is part of routine eye exams.
read more about h test ductions versions ...Ductions test one eye at a time. Versions test both eyes together. The H-test evaluates both. Differences help identify muscle or nerve issues. Results guide diagnosis.
The H-test screens eye movement control efficiently. It is used in many settings.
Abnormal movement may indicate muscle weakness. Nerve palsy patterns can appear. Restrictions may suggest mechanical issues. Further tests are often ordered.
Pay attention to whether both eyes move smoothly and fully in every direction as you follow the target. Clinicians look for a consistent limitation in one gaze direction, eye drifting that requires a quick correction, or a mismatch between how the eyes move together versus one at a time. Any double vision, discomfort, or dizziness during specific directions is also useful because it can help narrow the cause and guide what tests come next.
No. It involves simple eye tracking.
No. A small target is sufficient.
Yes. It is widely used in pediatrics.
It helps identify patterns that suggest nerve involvement.
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