Bielschowsky's head tilt test
A test for palsy of the superior oblique muscle caused by damage to the IVth cranial nerve.
Damage to the IVth cranial nerve, or trochlear nerve, may cause a palsy of the superior oblique muscle, resulting in a hypertrophia of the affected eye. People with this condition will experience both a vertical and a torsional diplopia (double vision), and they will compensate for this by tilting the head toward the shoulder of the unaffected eye.
A positive test in oblique muscle palsy:
Tilting head toward weak superior oblique muscle will increase image separation.
Tilting head toward opposite side to weak oblique muscle will decrease image separation.
See also Bielschowsky's squint.
What is an eponym?
An eponym is a word derived from the name of a person, whether real or fictional. A medical eponym is thus
any word related to medicine, whose name is derived from a person.
What is Whonamedit?
Whonamedit.com is a biographical dictionary of medical eponyms.
It is our ambition to present a complete survey of all medical phenomena named for a person,
with a biography of that person.
Whonamedit? does not give medical advice.
This survey of medical eponyms and the persons behind them is meant as a general interest site only.
No information found here must under any circumstances be used for medical purposes, diagnostically,
therapeutically or otherwise. If you, or anybody close to you, is affected, or believe to be
affected, by any condition mentioned here: see a doctor.