February 2011
Volume 52, Issue 2
Free
Letters to the Editor  |   February 2011
Author Response: Functional Retinal Locus Rather than Multiple PRLs?
Author Affiliations & Notes
  • Michael D. Crossland
    UCL Institute of Ophthalmology, London, United Kingdom.
  • David P. Crabb
    UCL Institute of Ophthalmology, London, United Kingdom.
  • Gary S. Rubin
    UCL Institute of Ophthalmology, London, United Kingdom.
Investigative Ophthalmology & Visual Science February 2011, Vol.52, 1191. doi:10.1167/iovs.11-7213
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      Michael D. Crossland, David P. Crabb, Gary S. Rubin; Author Response: Functional Retinal Locus Rather than Multiple PRLs?. Invest. Ophthalmol. Vis. Sci. 2011;52(2):1191. doi: 10.1167/iovs.11-7213.

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      © ARVO (1962-2015); The Authors (2016-present)

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We thank Samuel Markowitz et al. for their interest in our work. Although the fixation patterns for each task in Figure 1 may appear similar, our statistical analysis gives quantitative and objective evidence that these fixation clusters are not in “the same retinal region,” nor are they from “the same continuum of oculomotor skills.” We agree with Dr. Markowitz et al. that one representative fixation point cannot be identified for all tasks and did not make this claim in the paper. 
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