Evidence map›Paper›PMID 33239765›Full record

ArticleEye (London, England)2021

Extended intervals for wet AMD patients with high retreatment needs: informing the risk during COVID-19, data from real-world evidence.

Kelvin Yi Chong Teo, Vuong Nguyen, Daniel Barthelmes, Jennifer J Arnold, Mark C Gillies, Chui Ming Gemmy Cheung

Open access · bronzeAbstract read
In one paragraph

Article in Eye (London, England), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.4field-weighted citation impact, top 14% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 22 citations in OpenAlex.

  1. Management of fibrosis in neovascular age-related macular degeneration.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 3 countries.

Kelvin Yi Chong TeoSingapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore.ORCID http://orcid.org/0000-0002-7458-7081
Vuong NguyenSave Sight Institute, University of Sydney, Sydney, NSW, Australia.
Daniel BarthelmesSave Sight Institute, University of Sydney, Sydney, NSW, Australia.
Jennifer J ArnoldMarsden Eye Specialist, Sydney, NSW, Australia.
Mark C GilliesSave Sight Institute, University of Sydney, Sydney, NSW, Australia.
Chui Ming Gemmy CheungSingapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore. gemmy.cheung.c.m@singhealth.com.sg.
The University of Sydney · AUSingHealth · SG

Funding

MOH | National Medical Research Council (NMRC) NMRC/LCG/0042018
6 · The paper itself

Abstract

BACKGROUND/

objectiveSome clinicians may be forced to temporarily extend treatment intervals in neovascular age-related macular degeneration (nAMD) eyes with frequent retreatments to reduce the number of visits during the COVID-19 pandemic. To provide an indication of what these outcomes may be, we studied eyes with active lesions with unplanned treatment interval extensions before the pandemic occurred.

methodsWe compared eyes with active disease despite ≤6 weekly injections whose next injection was extended to ≥7 weeks and those whose intervals were not extended. We identified 1559 (16%) of 9602 eyes from the Fight Retinal Blindness! (FRB!) registry (2013 and 2018) that fit this criteria. Eyes were further stratified into four groups by the mean interval over the following 6 months: (1) ≤6 weeks (81%), (2) 7-9 weeks (9%), (3) 10-12 weeks (5%) and (4) >12 weeks (5%).

resultsThere was a significant loss in VA in eyes extended to >12 weeks compared to the non-extended group (adjusted VA change, mean (95% CI): ≤6 weeks, 0.4 (-1.5 to 2.2), versus >12 weeks, -4.7 (-7.4 to -2.1), letters, p = 0.03 and a threefold increase in relative risk of losing ≥15 letters (absolute risk (14% versus 4%, p < 0.01)).

conclusionMean VA remained stable for 6 months in eyes requiring frequent treatment despite retreatment interval extension up to 10-12 weeks. There was a significant short-term risk to vision when retreatment interval was extended beyond 12 weeks, hence extensions to this level should be considered cautiously. These data may be useful for physicians who are considering reducing visits to mitigate the risk of COVID-19.

Indexed as

COVID-19Wet Macular DegenerationAngiogenesis InhibitorsFollow-Up StudiesHumansIntravitreal InjectionsPandemicsRanibizumabRetreatmentSARS-CoV-2Treatment OutcomeVascular Endothelial Growth Factor AVisual AcuityAngiogenesis InhibitorsRanibizumabVascular Endothelial Growth Factor A

Identifiers

PMID33239765
PMCPMC7688202
OpenAlexW3108601490

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.