A usability study of an innovative optical device for the diagnosis of schistosomiasis in Nigeria

M.L. Bengtson, A.A. Onasanya, P.O. Oyibo, Brice Meulah, K.T. Samenjo, I.G. Braakman, Wellington Oyibo Andi, J.C. Diehl

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Schistosomiasis is a neglected tropical disease thatis predominantly diagnosed by conventional microscopy in Sub-Saharan Africa. However, effective diagnosis by conventional microscopy is limited by multiple technical and logistic barriers.Alternative diagnostic techniques are needed. The Schistoscope is a digital optical device that has been designed to support microscopists for the detection of schistosomiasis in endemic resource-limited settings. Aim: A user-centered design approachwas used to assess the usability and user-acceptance of the Schistoscope compared to conventional microscopy in the Federal Capital Territory, Abuja, Nigeria. In this study, usability and acceptance are defined as being easy-to-use, efficient, and suitable in the daily workflow by end-users. Methods: Using a qualitative conventional context analysis approach, a mixedmethods questionnaire was used to elucidate themes related to the usability and user-acceptance of the device. Participants included trained microscopists and university students (n=17). Results: Participants answered both ranked and open questions. Overall the device’s use was considered to be easy and acceptable
in the routine workflow of a microscopist. The auto-scan feature was considered to have added value. Critical feedback regarding aesthetics of the device, particularly related to size, was noted by the participants. Conclusion: The usability approach used in this study elucidated valuable insights of end-users. The Schistoscope was very well perceived by both medical students and trained microscopists. Critical feedback will be used to further improve the next iterative design of the device.
Original languageEnglish
Title of host publication2022 IEEE Global Humanitarian Technology Conference, GHTC 2022
Place of PublicationPiscataway, NJ, USA
ISBN (Electronic)978-1-6654-5097-3
Publication statusPublished - 2022

Publication series

Name2022 IEEE Global Humanitarian Technology Conference, GHTC 2022

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


  • digital optical device
  • chistosomiasis
  • usability
  • mixed-model questionnaire
  • resource-limited settings


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