ArticleInternational ophthalmology2009
Worldwide geographical distribution of ophthalmology publications.
Article in International ophthalmology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed.
- Global academic productivity in emergency medicine and research output by countries of different income levels.Clinical and experimental emergency medicine · 2026Article
- Research on eye health 2000-2019: a global bibliometric analysis with a focus on equity.BMJ open ophthalmology · 2026Article
- Underrepresentation of Low- and Middle-Income Nations in Ophthalmology Journals: A Critical Analysis on Diversity, Equity, and Global Representation.Translational vision science & technology · 2023Article
- Ophthalmic Education: The Top 100 Cited Articles in Ophthalmology Journals.Journal of academic ophthalmology (2017) · 2023Article
- Geographical distribution of authorship for leading cardiothoracic surgery journals.Journal of cardiac surgery · 2022Article
- Worldwide ophthalmological research production 2000-2020, with special focus on the Nordic contribution.Acta ophthalmologica · 2022Article
- Article
- A novel EyePhone© App for improving adherence to glaucoma therapy.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2021Article
- Article
- Trends in ophthalmology journals: a five-year bibliometric analysis (2009-2013).International journal of ophthalmology · 2016Article
- Bibliometric trends in ophthalmology 1997-2009.Indian journal of ophthalmology · 2015Review
- Contribution of Arab researchers to ophthalmology: a bibliometric and comparative analysis.SpringerPlus · 2015Article
- Contribution of Iran to the Ophthalmic Literature over the Past Three Decades.Journal of ophthalmic & vision research · 2011Article
- [Differences in the treatment of exudative age-related macular degeneration in Germany and Great Britain].Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft · 2011Article
- Radiological research activity 1998-2007: relationship to gross domestic product, health expenditure and public expenditure on education.Insights into imaging · 2010Article
- A Bibliometric and Mapping Analysis of Glaucoma Research between 1900 and 2019.Ophthalmology. GlaucomaArticle
- A bibliometric study of publications by Indian ophthalmologists and vision researchers, 2001-06.Indian journal of ophthalmologyArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
International peer-reviewed publications form the basis of evidence-based medicine and are one of the main indicators of ophthalmology research activity. This paper examines the origins of such articles in relation to geographical location, population demographics and economic research profiles. Publications from five ophthalmology journals over 5 years were analysed using the Medline/Pubmed search engine. Country of origin was ascertained based on the address of the corresponding author. Worldwide ophthalmology research output was analysed in relation to population demographics and research expenditure. In total, 7,754 articles from 67 countries from 2002 to 2006 were analysed. The overall number of articles published increased by over 29% during this period. The United States (US) produced the greatest number of articles. Singapore produced the most publications per 10(6) population. There was a relationship between gross domestic product (GDP) greater than $20,000 and population-adjusted output. The US followed by the United Kingdom and Japan were the greatest gross contributors. Population-adjusted figures revealed that Singapore, Iceland and Australia were the most prolific nations. There was a relationship between GDP and the top-ranked population-adjusted countries. The top 10 most productive population-adjusted countries spend relatively more on research and development than the top 10 gross contributors.
Indexed as
Identifiers
19023523What OpenQuestion holds
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.