Slit Lamp Demonstration of Heartbeat Nystagmus Due to Superior Canal Dehiscence

A 61-year-old woman developed oscillopsia triggered by the Valsalva maneuver secondary to barotrauma. The neuro-ophthalmologic examination was normal, except for the slit lamp examination, which showed fine torsional eye movement (). After Valsalva maneuver, the patient developed a conjugate torsional/upbeat nystagmus with the upper poles beating toward the right shoulder. It was synchronous with the heartbeat (). Temporal bone CT demonstrated right superior canal dehiscence (Figure).

Read article at journal's website

Related Articles

Responses

Your email address will not be published. Required fields are marked *