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Application of smartphone cameras for detecting clinically active trachoma
  1. Satasuk Joy Bhosai1,
  2. Abdou Amza2,
  3. Nassirou Beido2,
  4. Robin L Bailey3,
  5. Jeremy David Keenan1,
  6. Bruce D Gaynor1,
  7. Thomas M Lietman1
  1. 1F.I Proctor Foundation and Department of Ophthalmology, University of California San Francisco, San Francisco, California, USA
  2. 2Programme National de Lutte Contre la Cecité, Niamey, Niger
  3. 3Department of Clinical Research, London School of Hygiene and Tropical Medicine, London, UK
  1. Correspondence to Professor Thomas M Lietman, Department of Ophthalmology, F.I. Proctor Foundation, 513 Parnassus Ave, Med Sci S309, University of California, San Francisco, San Francisco, CA 94143- 0412, USA; tom.lietman{at}

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The WHO is committed to eliminating trachoma as a public health concern by 2020.1 Since decisions for mass treatment are determined by the prevalence of clinical trachoma in a community, efficient and accurate methods for monitoring clinical activity remain a priority.2 However, reliability of clinical examination is poor and disagreement between graders is common.3 Photography of the conjunctiva could reduce variability and improve accuracy of trachoma surveillance. Currently, research studies use single-lens reflex (SLR) cameras to validate field grading.4 Yet, SLR cameras are expensive and require substantial field training to operate, and thus few trachoma programmes have adopted this technology. A simpler, more affordable camera may increase uptake of this diagnostic technique. In view of growing applications of mobile technology,5 we examined the use of smartphone imaging in trachoma.

During a recent programme, Partnership for the Rapid Elimination of Trachoma (PRET study) visit in Niger, we performed …

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