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A 69 year old woman with nuclear sclerotic cataracts was examined. She was awaiting neurosurgery for treatment of drug refractory titubation (head tremor). Before cataract surgery, she underwent successful neurosurgery. The implanted Medtronic deep brain stimulation device rendered her asymptomatic of tremors. At the cataract preoperative clinic she showed the device identification card that stated “ultrasound diathermy … anywhere on your body … can result in severe injury or death.”1 Following confirmation from Medtronic that it was safe to proceed, the patient had an uneventful left phacoemulsification performed under general anaesthesia with the neurostimulator turned “off.” Seven months later she underwent a similar successful right phacoemulsification.
Comment
Deep brain neurostimulation of the thalamus is the treatment of choice for drug refractory essential tremor. …