Trial reportFrontiers in ophthalmology2026
Long-term Impact of Intravitreal Injections on the ocular surface; a 2-year follow-up study.
Trial report in Frontiers in ophthalmology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04458012 (Epidemiological Study of Dry Eye Disease in Stavanger), which is not on this map. Not yet cited in PubMed.
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.
Epidemiological Study of Dry Eye Disease in Stavanger: Dry Eye Disease in Patients With Age-related Macular Degeneration Treated With Intravitreal Injections
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Intravitreal injection (IVI) therapy is the most frequently performed intraocular procedure worldwide, with topical povidone-iodine (PVP-I) as the standard pre-injection antiseptic. However, PVP-I has been shown to exert cytotoxic effects on the ocular surface. The purpose of this study was to evaluate the impact of two years of serial anti-vascular endothelial growth factor (VEGF) IVI on ocular surface parameters. Methods: Patients with neovascular age-related macular degeneration (nAMD) receiving unilateral intravitreal anti-VEGF injections were examined at two time points, separated by a two-year interval. An aseptic protocol with PVP-I was applied prior to each injection. Tear meniscus height (TMH), bulbar redness (BR), and meibomian gland (MG) loss were assessed using the Oculus Keratograph 5M, with the fellow eye serving as control. For statistical analysis, the related-samples Wilcoxon signed-rank test was applied to non-normally distributed data, and the paired-sample Student's t-test to normally distributed data. Results: Sixty patients (mean age, 78.6 ± 8.5 years; range, 55-96) were included. Between examinations, patients received a mean of 15.5 ± 6.5 IVI (range, 5-30). A significant increase in mean BR was observed in untreated fellow eyes compared with baseline measurements (1.68 ± 0.47 vs. 1.41 ± 0.46; Conclusions: Eyes receiving repeated intravitreal anti-VEGF injections with preoperative PVP-I antisepsis were significantly less hyperemic than fellow untreated eyes, and this difference increased over two years of continued treatment. Potential mechanisms include a beneficial alteration of the ocular surface microbiome by PVP-I or an antiangiogenic effect of anti-VEGF therapy. Clinical Trial Registration: https://clinicaltrials.gov/study/NCT04458012, identifier NCT04458012.
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