The reassuring result — no vertical refixation either way.
Live · Alternate cover test
Stylised teaching animation, exaggerated for visibility — not a recording of a real patient, and not a diagnosis.
Localises toTest setup
Bedside testAlternate cover test
Fast phaseNo vertical movement
Reading
Covering and uncovering each eye in turn produces no vertical correction — the eyes stay level. Absence of skew is reassuring but, on its own, the least powerful of the three HINTS signs: it never overrides an abnormal impulse or dangerous nystagmus finding elsewhere in the exam.
Stylised teaching animations authored by NeuroDash. Not real-patient recordings, not board-certified, and not reviewed by an outside specialist. Educational only — not medical advice and not a diagnosis.