ArticleThe American journal of tropical medicine and hygiene2020
Comparison of Smartphone Photography, Single-Lens Reflex Photography, and Field-Grading for Trachoma.
Article in The American journal of tropical medicine and hygiene, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
15 citing papers in PubMed, 20 citations in OpenAlex.
- Effect of Biannual Mass Azithromycin Distributions to Preschool-Aged Children on Trachoma Prevalence in Niger: A Cluster Randomized Clinical Trial.JAMA network open · 2022Trial
- Comparison of Methods for Assessing Chlamydia trachomatis Transmission Intensity: A Systematic Review.The American journal of tropical medicine and hygiene · 2026Article
- Training Data Recorders with a Manual to Take High-Quality Trachoma Photographs in South Sudan.The American journal of tropical medicine and hygiene · 2026Article
- Discrepancy Between Active Trachoma and Tests of Chlamydial Infection in Alto Amazonas, Peru.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2026Article
- Comparing the Generalizability of Multiregional versus Locally Trained Deep Learning Models for Trachoma Detection.Ophthalmology science · 2026Article
- Comparing image quality and trachoma detection across three camera types from a survey in Kongwa, Tanzania.International health · 2023Article
- A Virtual Reading Center Model Using Crowdsourcing to Grade Photographs for Trachoma: Validation Study.Journal of medical Internet research · 2023Article
- Assessing the subjective quality of smartphone anterior segment photography: a non-inferiority study.International ophthalmology · 2023Article
- Photographic grading for trachoma diagnosis within trachoma impact surveys in Amhara region, Ethiopia.Transactions of the Royal Society of Tropical Medicine and Hygiene · 2023Article
- Detection of trachoma using machine learning approaches.PLoS neglected tropical diseases · 2022Article
- Trachoma.Nature reviews. Disease primers · 2022Review
- Evaluation of photography using head-mounted display technology (ICAPS) for district Trachoma surveys.PLoS neglected tropical diseases · 2021Observational
- The potential use of digital health technologies in the African context: a systematic review of evidence from Ethiopia.NPJ digital medicine · 2021Review
- Acceptability and perceived utility of different diagnostic tests and sample types for trachoma surveillance in the Bijagos Islands, Guinea Bissau.Transactions of the Royal Society of Tropical Medicine and Hygiene · 2021Article
- Development and deployment of a smartphone application for diagnosing trachoma: Leveraging code-free deep learning and edge artificial intelligence.Saudi journal of ophthalmology : official journal of the Saudi Ophthalmological SocietyArticle
Corrections and comments
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Authors and funding
14 authors at 6 institutions in 2 countries.
Funding
Abstract
Conjunctival examination for trachomatous inflammation-follicular (TF) guides public health decisions for trachoma. Smartphone cameras may allow remote conjunctival grading, but previous studies have found low sensitivity. A random sample of 412 children aged 1-9 years received an in-person conjunctival examination and then had conjunctival photographs taken with 1) a single-lens reflex (SLR) camera and 2) a smartphone coupled to a 3D-printed magnifying attachment. Three masked graders assessed the conjunctival photographs for TF. Latent class analysis was used to determine the sensitivity and specificity of each grading method for TF. Single-lens reflex photo-grading was 95.0% sensitive and 93.6% specific, and smartphone photo-grading was 84.1% sensitive and 97.6% specific. The sensitivity of the smartphone-CellScope device was considerably higher than that of a previous study using the native smartphone camera, without attachment. Magnification of smartphone images with a simple attachment improved the grading sensitivity while maintaining high specificity in a region with hyperendemic trachoma.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.