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Eye drop neurology
  1. Luke Bennetto1,2,
  2. Catherine Guly2,
  3. Ian Ormerod1,
  4. Gordon T Plant3,4,5
  1. 1Department of Neurology, Frenchay Hospital, Bristol, UK
  2. 2Department of Neuro-ophthalmology, Bristol Eye Hospital, Bristol, UK
  3. 3The National Hospital for Neurology and Neurosurgery, London, UK
  4. 4Moorfields Eye Hospital, London, UK
  5. 5St Thomas’ Hospital, London, UK
  1. Correspondence to Dr Luke Bennetto, Department of Neurology, Frenchay Hospital, Bristol BS16 1LE, UK; luke.bennetto{at}


Eye drops can help to diagnose and prevent complications of neurological disorders. Guttae ophthalmicae (eye drops) are generally safe because the drugs rarely achieve significant systemic concentrations, although there are rare exceptions. This article covers contemporary pharmacological pupil testing; how to dilate a pupil safely; common reasons why pupils do not respond to drops; and corneal lubrication to prevent complications of weak eye closure.

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