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Comment & Response
December 2015

Accuracy of Laboratory Assays in Ophthalmic Practice—Reply

Author Affiliations
  • 1Scheie Eye Institute, University of Pennsylvania, Philadelphia
JAMA Ophthalmol. 2015;133(12):1480-1481. doi:10.1001/jamaophthalmol.2015.3858

In Reply Downie and Vingrys believe that our findings1 are in contrast to their unpublished data that showed much smaller variability. It is difficult for us to interpret the difference between our studies without the details of their inclusion and exclusion criteria and characteristics of their study participants. However, our results are consistent with those reported previously by other research groups.2,3

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