Evidence map›Paper›PMID 31602527›Full record

ReviewInternational ophthalmology2020

Ocular abnormalities in beta thalassemia patients: prevalence, impact, and management strategies.

Samira Heydarian, Reza Jafari, Kiumars Nowroozpoor Dailami, Hassan Hashemi, Ebrahim Jafarzadehpour, Mohsen Heirani, Abbasali Yekta, Monireh Mahjoob, Mehdi Khabazkhoob

Abstract readReview
PubMed Publisher
In one paragraph

Review in International ophthalmology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.1field-weighted citation impact, top 20% 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

12 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Article
  3. Factors affecting color vision: a systematic review.International journal of ophthalmology · 2026
    Review
  4. Article
  5. Article
  6. Macular microvascular changes in children with transfusion-dependent beta-thalassemia.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2021
    Observational
  7. Novel retinal findings in β-thalassemia major: older age and higher ferritin level as the risk factors.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2021
    Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. 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

9 authors at 6 institutions in 1 country.

Samira HeydarianDepartment of Rehabilitation Sciences, School of Allied Medical Sciences, Mazandaran University of Medical Sciences, Sari, Iran.
Reza JafariDepartment of Ophthalmology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.
Kiumars Nowroozpoor DailamiDepartment of Ophthalmology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.
Hassan HashemiNoor Research Center for Ophthalmic Epidemiology, Noor Eye Hospital, Tehran, Iran.
Ebrahim JafarzadehpourDepartment of Optometry, Rehabilitation Faculty, Iran University of Medical Sciences, Tehran, Iran.
Mohsen HeiraniDepartment of Optometry, School of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, Iran. Heyranim931@mums.ac.ir.ORCID http://orcid.org/0000-0002-8426-5924
Abbasali YektaRefractive Errors Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
Monireh MahjoobHealth Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.
Mehdi KhabazkhoobDepartment of Psychiatric Nursing and Management, School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Mazandaran University of Medical Sciences · IRMashhad University of Medical Sciences · IRIran University of Medical Sciences · IRNoor Eye Hospital · IRShahid Beheshti University of Medical Sciences · IRZahedan University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBeta thalassemia (β-thalassemia) is a hereditary disease caused by defective globin synthesis and can be classified into three categories of minor (β-TMi), intermedia (β-TI), and major (β-TM) thalassemia. The aim of our study is to investigate the effects of β-thalassemia and its treatment methods on different parts of the eye and how early-diagnostic methods of ocular complications in this disorder would prevent further ocular complications in these patients by immediate treatment and diet change.

methodsWe developed a search strategy using a combination of the words Beta thalassemia, Ocular abnormalities, Iron overload, chelation therapy to identify all articles from PubMed, Web of Science, Scopus, and Google Scholar up to December 2018. To find more articles and to ensure that databases were thoroughly searched, the reference lists of selected articles were also reviewed.

resultsComplications such as retinopathy, crystalline lens opacification, color vision deficiency, nyctalopia, depressed visual field, reduced visual acuity, reduced contrast sensitivity, amplitude reduction in a-wave and b-wave in Electroretinography (ERG), and decrease in the Arden ratio in Electrooculography (EOG) have all been reported in β-thalassemia patients undergoing chelation therapy.

conclusionOcular problems due to β-thalassemia may be a result of anemia, iron overload in the body tissue, side effects of iron chelators, and the complications of orbital bone marrow expansion.

Indexed as

Disease Managementbeta-ThalassemiaElectroretinographyGlobal HealthHumansPrevalenceRetinal DiseasesBeta thalassemiaChelation therapyIron overloadOcular abnormalities

Identifiers

PMID31602527
OpenAlexW2980215678

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.