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Preoperative site marking
  1. A Mokashi,
  2. R E Stead,
  3. S Subramaniam
  1. Kings Mill Hospital Department of Ophthalmology, Mansfield, UK
  1. Mr S Subramaniam, Kings Mill Ophthalmology Department, Kings Mill Hospital, Mansfield NG17 4JL, UK; ssubramaniam{at}

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It is with great interest that we noted the comments on correct site surgery and preoperative site marking.1

In our own experience, we have recently encountered two episodes of sub-Tenon’s anaesthesia of the incorrect eye preoperatively. Although incorrect eye sub-Tenon’s blocks are rare, they represent a relatively common cause of ophthalmological preventable surgical error, accounting for approximately 13% …

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  • Competing interests: None.

  • Patient consent: Obtained.