The credit for the head tilt test for cyclovertical extraocular muscle palsies at least belongs to Bielschowsky, if not also Hofmann and Nagel.
Romano
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PE
D003941:Diagnostic Techniques, Ophthalmological / Q000266:history*; D019416:Head Movements; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D009801:Oculomotor Muscles / Q000473:pathology; D011187:Posture; D013285:Strabismus / Q000175:diagnosis / Q000266:history*