Evidence map›Paper›PMID 33825030›Full record

ArticleGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie2021

Intraocular pressure responses to walking with surgical and FFP2/N95 face masks in primary open-angle glaucoma patients.

Danica Janicijevic, Beatríz Redondo, Raimundo Jiménez, Javier Lacorzana, Amador García-Ramos, Jesús Vera

Open access · greenAbstract read
In one paragraph

Article in Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 13% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Pooled it
  2. Acute intraocular pressure changes during isometric exercise in glaucoma patients: the influence of exercise and intensity.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
    Article
  3. Risks and benefits of face masks in children.Frontiers in pediatrics · 2026
    Review
  4. Acute intraocular pressure responses changes during dynamic resistance training in primary open-angle glaucoma patients and age-matched controls.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
    Article
  5. Article
  6. The Effect of Wearing an N95 Face Mask on Intraocular Pressure.Journal of ophthalmic & vision research · 2025
    Article
  7. Article
  8. Influence of the body positions adopted for resistance training on intraocular pressure: a comparison between the supine and seated positions.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2023
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 4 countries.

Danica JanicijevicResearch Academy of Human Biomechanics, The Affiliated Hospital of Medical School of Ningbo University, Ningbo University, Ningbo, China.
Beatríz RedondoCLARO (Clinical and Laboratory Applications of Research in Optometry) Research Group, Department of Optics, Faculty of Sciences, University of Granada, Campus de la Fuentenueva 2, 18001, Granada, Spain. beatrizrc@ugr.es.
Raimundo JiménezCLARO (Clinical and Laboratory Applications of Research in Optometry) Research Group, Department of Optics, Faculty of Sciences, University of Granada, Campus de la Fuentenueva 2, 18001, Granada, Spain.
Javier LacorzanaDepartment of Ophthalmology, Virgen de las Nieves University Hospital, Granada, Spain.
Amador García-RamosDepartment of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
Jesús VeraCLARO (Clinical and Laboratory Applications of Research in Optometry) Research Group, Department of Optics, Faculty of Sciences, University of Granada, Campus de la Fuentenueva 2, 18001, Granada, Spain.
Universidad de Granada · ESHospital Universitario Virgen de las Nieves · ESNingbo University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe use of face mask is globally recommended as a preventive measure against COVID-19. However, the intraocular pressure (IOP) changes caused by face masks remain unknown. The objective of this study was to assess the impact of wearing surgical and FFP2/N95 face masks during a 400-m walking protocol on IOP in primary open-angle glaucoma (POAG) patients.

methodsThirteen subjects diagnosed of POAG (21 eyes) were enrolled in this study. IOP was measured at baseline, during the 400-m walking protocol and after 5 min of passive recovery while POAG patients wore a surgical mask, FFP2/N95 mask and no mask in randomized order. From the 21 POAG eyes, we analyzed the IOP changes caused by physical exercise with two face masks and without wearing any face mask.

resultsAt rest (baseline and recovery measurements), the use of the different face masks did not affect IOP levels (mean differences ranging from 0.1 to 0.6 mmHg). During physical activity, wearing an FFP2/N95 mask caused a small (mean differences ranging from 1 to 2 mmHg), but statistically significant, IOP rise in comparison to both the surgical mask and control conditions (Cohen's d = 0.63 and 0.83, respectively).

conclusionFace masks must be used to minimize the risk of SARS-CoV-2 transmission, and POAG patients can safely use FFP2/N95 and surgical masks at rest. However, due to the IOP rise observed while walking with the FFP2/N95 mask, when possible, POAG patients should prioritized the use of surgical masks during physical activity.

Indexed as

COVID-19Glaucoma, Open-AngleHumansIntraocular PressureMasksN95 RespiratorsSARS-CoV-2WalkingGlaucoma managementPhysical exerciseSARS-CoV-2

Identifiers

PMID33825030
PMCPMC8023773
OpenAlexW3147514491

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.