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Eyescores: an open platform for secure electronic data and photographic evidence collection in ophthalmological field studies
  1. Chrissy h Roberts1,
  2. Tara Mtuy1,2,
  3. Tamsyn Derrick1,
  4. Matthew J Burton1,
  5. Martin J Holland1
  1. 1 Clinical Research Department, London School of Hygiene and Tropical Medicine, London, UK
  2. 2 Kilimanjaro Centre for Community Ophthalmology, KCMC Hospital, Moshi, Tanzania
  1. Correspondence to Dr Chrissy h Roberts, Clinical Research Department, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK; chrissyhroberts{at}

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In ophthalmological studies, the need to take photographs as evidence introduces additional complications to fieldwork. A recent report1 highlighted the usefulness of smartphones in the collection and grading of photographic evidence of trachoma. We have recently considered the wider potential of portable computerised equipment to integrate the recording and management of trachoma photographs with field data and biological specimens.

While the overall resolution of smartphone cameras increases rapidly, an outstanding issue with smartphone photography is the phenomenon of shutter lag, a significant time interval between actuation and the recording of an image. Shutter lag is associated with image blurring as the subject or camera may have moved out of focus by the time of image recording. Recently released smartphones such as the HTC One X and Samsung Galaxy S3 are robust against shutter lag, but are currently the exceptions in a telephony market that has responded slowly to the problem. Light Field Photography (LFP) technology ( has the potential to eliminate …

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