Alternate cover testTest

No skew

The reassuring result — no vertical refixation either way.

Alternate cover testLive

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.

Source: HINTS exam (Kattah 2009); Newman-Toker AVS literature.

Practice this in the trainerPlay today’s case

Other signs

Up-beating torsional

Dix-Hallpike

Horizontal direction-changing

Supine roll test

Horizontal apogeotropic

Supine roll test

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 or a diagnosis.