Charles Bonnet syndrome in hemianopia, following antero-mesial temporal lobectomy for drug-resistant epilepsy

Sara Contardi, Guido Rubboli, Marco Giulioni, Roberto Michelucci, Fabio Pizza, Elena Gardella, Federica Pinardi, Ilaria Bartolomei, Carlo Alberto Tassinari

Research output: Contribution to journalArticle


Charles Bonnet syndrome (CBS) is a disorder characterized by the occurrence of complex visual hallucinations in patients with acquired impairment of vision and without psychiatric disorders. In spite of the high incidence of visual field defects following antero-mesial temporal lobectomy for refractory temporal lobe epilepsy, reports of CBS in patients who underwent this surgical procedure are surprisingly rare. We describe a patient operated on for drug-resistant epilepsy. As a result of left antero-mesial temporal resection, she presented right homonymous hemianopia. A few days after surgery, she started complaining of visual hallucinations, such as static or moving "Lilliputian" human figures, or countryside scenes, restricted to the hemianopic field. The patient was fully aware of their fictitious nature. These disturbances disappeared progressively over a few weeks. The incidence of CBS associated with visual field defects following epilepsy surgery might be underestimated. Patients with post-surgical CBS should be reassured that it is not an epileptic phenomenon, and that it has a benign, self-limiting, course which does not usually require treatment.

Original languageEnglish
Pages (from-to)271-275
Number of pages5
JournalEpileptic Disorders
Issue number3
Publication statusPublished - Sep 2007



  • Charles Bonnet syndrome
  • Epilepsy surgery
  • Hemianopsia
  • Mesial temporal lobe epilepsy
  • Temporal lobectomy
  • Visual hallucination

ASJC Scopus subject areas

  • Clinical Neurology

Cite this

Contardi, S., Rubboli, G., Giulioni, M., Michelucci, R., Pizza, F., Gardella, E., Pinardi, F., Bartolomei, I., & Tassinari, C. A. (2007). Charles Bonnet syndrome in hemianopia, following antero-mesial temporal lobectomy for drug-resistant epilepsy. Epileptic Disorders, 9(3), 271-275.