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Authors’ response: After intermittent exotropia surgery, consecutive esotropia: good or bad? by K K Shoaib
  1. Deborah Buck1,
  2. Christine Powell2,
  3. John Sloper3,
  4. Robert Taylor4,
  5. Peter Tiffin5,
  6. Michael P Clarke1,2
  1. 1Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
  2. 2Department of Ophthalmology, Newcastle Upon Tyne NHS Hospitals Foundation Trust, Newcastle upon Tyne, UK
  3. 3Moorfields Eye Hospital, London, UK
  4. 4York Hospitals NHS Trust, York, UK
  5. 5Sunderland Eye Infirmary, Sunderland, UK
  1. Correspondence to Dr Deborah Buck, Institute of Neuroscience, Newcastle University, Clinical Trials Unit, 4th Floor, William Leech Building, Medical School, Newcastle upon Tyne NE2 4HH, UK; Deborah.Buck{at}

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We thank Dr Shoaib for the points raised1 regarding our recent article.2

It is difficult to compare results across studies because differing success criteria are often used, an issue which we mentioned in our discussion and believe should be addressed by future studies. In particular these outcome criteria do not take into account the initial characteristics of the patients studied or assess the control of their deviations. We chose the Pineles et al3 definition of ‘excellent’ as we wished to use a stringent outcome measure that included motor and sensory parameters. This does not mean that we intended the studies to be directly compared. The mean ages and duration of follow-up of children in the two studies are different, and …

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