Evidence map›Paper›PMID 41954824›Full record

Observational studyInternational ophthalmology2026

The effect of parenteral iron treatment on ocular vascularity in female patients with iron deficiency anemia.

Nihat Aydın, Melek Tufek, Mustafa Capraz, Burcu Akman, Seyma Nur Altınok, Caner Kara

Abstract readObservational Study
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In one paragraph

Observational study in International ophthalmology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Nihat AydınDepartment of Ophthalmology, Amasya University, Sabuncuoğlu Şerefeddin Training and Research Hospital, Amasya, Turkey.ORCID http://orcid.org/0000-0003-0242-0570
Melek TufekDepartment of Ophthalmology, Amasya University, Sabuncuoğlu Şerefeddin Training and Research Hospital, Amasya, Turkey. melektfk@hotmail.com.ORCID http://orcid.org/0000-0001-5516-7412
Mustafa CaprazDepartment of Internal Medicine, Amasya University, Sabuncuoğlu Şerefeddin Training and Research Hospital, Amasya, Turkey.ORCID http://orcid.org/0000-0001-9586-6509
Burcu AkmanDepartment of Radiology, Amasya University, Sabuncuoglu Şerefeddin Training and Research Hospital, Amasya, Turkey.ORCID http://orcid.org/0000-0002-1067-9008
Seyma Nur AltınokDepartment of Radiology, Amasya University, Sabuncuoglu Şerefeddin Training and Research Hospital, Amasya, Turkey.ORCID http://orcid.org/0000-0002-3233-0472
Caner KaraDepartment of Ophthalmology, Etlik City Hospital, Ankara, Turkey.ORCID http://orcid.org/0000-0002-3628-547X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate the effect of parenteral iron treatment on the choroidal thickness, retinal nerve fiber layer (RNFL) thickness and retrobulbar blood flow in females with iron deficiency anemia (IDA) and to explore the mediation role of the changes in Doppler flow parameters in this relationship.

methodsA total of 55 eyes of 55 females in the reproductive period with a diagnosis of IDA were included in this prospective observational study. The hematologic values and the choroidal thickness at the subfoveal area and 500, 1000, 1500 µm nasal and temporal to the fovea, RNFL thickness, and central retinal artery (CRA) and ophthalmic artery (OA) parameters one day before and 8-12 weeks after parenteral iron treatment were evaluated in the patients.

resultsThe choroidal thickness at all measurement points and the RNFL thickness in all quadrants were significantly higher than the pre-treatment values following treatment (p < 0.05). The CRA peak systolic velocity (PSV) and end-diastolic velocity (EDV) values and the OA PSV values were statistically significantly lower after treatment compared to the pre-treatment values (p < 0.001, p < 0.01, p = 0.05, respectively). According to the mediation analysis, changes in hemoglobin (Hb), hematocrit (Hct), and mean corpuscular volume indirectly affected the superior RNFL thickness via the changes observed in OA EDV and the pulsatile index.

conclusionsParenteral iron treatment leads to significant improvement in both the hematological parameters and the retinal and choroidal circulation. This improvement was found to occur in a balanced manner through the changes in the retrobulbar blood flow parameters.

Indexed as

Anemia, Iron-DeficiencyChoroidOphthalmic ArteryRetinal ArteryAdultBlood Flow VelocityFemaleHumansProspective StudiesRegional Blood FlowRetinal Ganglion CellsTomography, Optical CoherenceYoung AdultCentral retinal arteryChoroidal thicknessIron deficiency anemiaOphthalmic arteryRetinal nerve fiber layer thickness

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Registered trials

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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.