• Chiara Posarelli, Eleonora Del Prete, Roberto Ceravolo, Marco Nardi, and Michele Figus.
• Surgical, Medical, Molecular Pathology, and Emergency Departments, University of Pisa, Pisa - Italy.
• Eur J Ophthalmol. 2015 May 1;25(3):258-9.

PurposeDeep brain stimulation provides benefits for people with Parkinson disease by managing some of their complications. None of the few reports in the current literature establishes the functionality of deep brain stimulation when activated during phacoemulsification.MethodsA 70-year-old woman with subthalamic deep brain stimulator (DBS) for advanced Parkinson disease was referred to our center for cataract surgery. To evaluate any possible interference between ultrasounds and the DBS, we registered the impedance of the electrodes before and after surgery.ResultsThe patient underwent uneventful phacoemulsification of her right eye under topical anesthesia with her internal pulse generator device activated. During the surgical procedure, all potential variations of the impedance of the electrodes were recorded.ConclusionsThis report demonstrates that phacoemulsification under topical anesthesia is a feasible procedure in patients with DBS, showing no interference between the ultrasounds and the internal pulse generator.

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