Evidence map›Paper›PMID 33204422›Full record

ReviewAnnals of medicine and surgery (2012)2020

Optic neuropathy as a presenting feature of vitamin B-12 deficiency: A systematic review of literature and a case report.

Fateen Ata, Ammara Bint I Bilal, Saad Javed, Hammad Shabir Chaudhry, Rohit Sharma, Rubab Fatima Malik, Hassan Choudry, Anand Bhaskaran Kartha

Open access · diamondAbstract readReview
In one paragraph

Review in Annals of medicine and surgery (2012), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 6% 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 43 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Vitamins and nutraceuticals in glaucoma research.European journal of ophthalmology · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Article
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  12. Article
  13. Epigenetics, Nutrition, and the Brain: Improving Mental Health through Diet.International journal of molecular sciences · 2024
    Review
  14. Serum levels of heavy metals in patients with Bell's palsy: a case-control study.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2024
    Article
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  19. Review
  20. Electrophysiological assessment of nutritional optic neuropathy: a case report.Documenta ophthalmologica. Advances in ophthalmology · 2023
    Review
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

8 authors at 3 institutions in 2 countries.

Fateen AtaDepartment of Internal Medicine, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.
Ammara Bint I BilalDepartment of Radiology, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.
Saad JavedDepartment of Internal Medicine, Allama Iqbal Medical College, Lahore, Pakistan.
Hammad Shabir ChaudhryDepartment of Internal Medicine, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.
Rohit SharmaDepartment of Internal Medicine, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.
Rubab Fatima MalikDepartment of Internal Medicine, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.
Hassan ChoudryDepartment of Internal Medicine, Punjab Medical College, Faisalabad, Pakistan.
Anand Bhaskaran KarthaDepartment of Internal Medicine, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.
Hamad General Hospital · QAAllama Iqbal Medical College · PKPunjab Medical College · PK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionVitamin B12 (VitB12) deficiency rarely manifests with visual symptoms. Optic nerve damage in VitB12 deficiency is thought to be via degeneration. However, optic neuritis, though infrequent, has been reported secondary to VitB12 deficiency. MATERIAL AND

methodsWe conducted a systematic review of all the reported cases of VitB12 deficiency with optic nerve involvement in Pubmed, Cochrane, and Google Scholar any date up to September 6, 2020. We have discussed the findings and compiled the available information on ophthalmological manifestations of VitB12 deficiency. We aim to provide a unified knowledge about the evidence related to types of optic neuropathies reported to date secondary to VitB12 deficiency. We also present a case of bilateral optic neuritis secondary to VitB12 deficiency. PRESENTATION OF CASE: We present a 29-year-old previously healthy male with progressive, painful, bilateral, but asymmetric visual deterioration for forty-five days. A detailed history, examination, and laboratory workup were carried out. He was diagnosed as having optic neuritis secondary to VitB12 deficiency. He showed partial improvement with the replacement of VitB12.

conclusionWe suggest promptly identifying and replacing VitB12 in patients with optic neuritis with proven VitB12 deficiency to prevent permanent damage to the optic nerve. Patients with VitB12 deficiency should have a baseline fundoscopic exam to rule out subclinical optic nerve damage. Moreover, patients who present with visual disturbances should be screened for VitB12 deficiency, especially the vegan population.

Indexed as

Cyanocobalamin deficiencyOphthalmological manifestationsOptic nerveOptic neuritisOptic neuropathyVisual symptomsVitamin B – 12 deficiency

Identifiers

PMID33204422
PMCPMC7653199
OpenAlexW3097282993

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.