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Ocular quinine toxicity in a sleepwalker
  1. Amit Sinha1,
  2. Sahar Al Husainy2
  1. 1Birmingham Heartlands Hospital, Birmingham, UK
  2. 2Department of Ophthalmology, Birmingham Heartlands Hospital, Birmingham, UK
  1. Correspondence to Dr Amit Sinha, amitsinha{at}


A 55-year-old woman presented to the emergency department following an episode of severe visual impairment, headache, dizziness and confusion. The patient had been taking quinine sulfate as long-term medication for leg cramps. During an episode of sleepwalking, the patient had taken an overdose of quinine sulfate. Following a thorough investigation and assessment, a diagnosis of ocular quinine toxicity was made. We present this case and highlight the risks of quinine prescription.

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