학술논문
Comparing image quality and trachoma detection across three camera types from a survey in Kongwa, Tanzania.
Document Type
Academic Journal
Author
Aguwa UT; Johns Hopkins University School of Medicine, Baltimore, MD, USA.; Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, Johns Hopkins University Hospital, 600 N. Wolfe St., Baltimore, MD 21287, USA.; Mkocha H; Kongwa Trachoma Project, Kongwa, Tanzania.; Munoz B; Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, Johns Hopkins University Hospital, 600 N. Wolfe St., Baltimore, MD 21287, USA.; Wolle MA; Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, Johns Hopkins University Hospital, 600 N. Wolfe St., Baltimore, MD 21287, USA.; Brady CJ; Robert Larner College of Medicine, University of Vermont School of Medicine, 111 Colchester Ave, Burlington, VT 05401, USA.; West SK; Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, Johns Hopkins University Hospital, 600 N. Wolfe St., Baltimore, MD 21287, USA.
Source
Publisher: Oxford University Press Country of Publication: England NLM ID: 101517095 Publication Model: Print Cited Medium: Internet ISSN: 1876-3405 (Electronic) Linking ISSN: 18763405 NLM ISO Abbreviation: Int Health Subsets: MEDLINE
Subject
Language
English
Abstract
Background: There is an increasing demand for photography for trachoma prevalence surveys. In previous studies, digital single lens reflex (DSLR) images were superior to smartphone images, but newer-model smartphones and/or lens attachments may be able to bridge this gap. This study compares the image quality and ability to detect trachomatous inflammation - follicular (TF) of three camera types: a DSLR Nikon camera, an iPhone SE and an iPhone 13 Pro with a cell scope.
Methods: We surveyed 62 children ages 1-7 y from two Tanzanian communities. Upper tarsal conjunctiva images of both eyes were graded for TF by two standardized graders. The McNemar's test and a logistic regression model were used for analyses.
Results: The DSLR camera malfunctioned during the study, thus the iPhone SE and iPhone 13 Pro with cell scope were both more likely to take high-quality, gradable photographs (88% and 86%, respectively) compared with the DSLR camera (69%) (p<0.001 and p=0.02, respectively). TF was detected in gradable images from the iPhone SE (8.8%) and iPhone 13 Pro with cell scope (9.0%) at the same rate (p=1.0) as images from the DSLR camera (9.7%).
Conclusion: Smartphones with high-quality image capture, like the iPhone SE/13 Pro, have the potential for use in trachoma surveys if the proportion of gradable images can be improved.
(© The Author(s) 2023. Published by Oxford University Press on behalf of Royal Society of Tropical Medicine and Hygiene.)
Methods: We surveyed 62 children ages 1-7 y from two Tanzanian communities. Upper tarsal conjunctiva images of both eyes were graded for TF by two standardized graders. The McNemar's test and a logistic regression model were used for analyses.
Results: The DSLR camera malfunctioned during the study, thus the iPhone SE and iPhone 13 Pro with cell scope were both more likely to take high-quality, gradable photographs (88% and 86%, respectively) compared with the DSLR camera (69%) (p<0.001 and p=0.02, respectively). TF was detected in gradable images from the iPhone SE (8.8%) and iPhone 13 Pro with cell scope (9.0%) at the same rate (p=1.0) as images from the DSLR camera (9.7%).
Conclusion: Smartphones with high-quality image capture, like the iPhone SE/13 Pro, have the potential for use in trachoma surveys if the proportion of gradable images can be improved.
(© The Author(s) 2023. Published by Oxford University Press on behalf of Royal Society of Tropical Medicine and Hygiene.)