Evidence map›Paper›PMID 32308951›Full record

ReviewJournal of ophthalmic & vision research

Serum Levels of Vitamin D in Diabetic Patients With and Without Retinopathy.

Mehrdad Afarid, Naghme Ghattavi, Mohammadkarim Johari

Open access · goldAbstract readReview
In one paragraph

Review in Journal of ophthalmic & vision research. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 12% 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

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

  1. Vitamin D and Ocular Diseases: A Systematic Review.International journal of molecular sciences · 2022
    Pooled it
  2. Article
  3. Impact of Vitamin D Deficiency and VDRFood science & nutrition · 2025
    Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Vitamin D and Diabetic Retinopathy.International journal of molecular sciences · 2023
    Review
  9. Review
  10. Review
  11. Review
  12. Article
  13. Article
  14. 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

3 authors at 1 institution in 1 country.

Mehrdad AfaridPoostchi Ophthalmology Research Center, Department of Ophthalmology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
Naghme GhattaviStudent Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran.
Mohammadkarim JohariPoostchi Ophthalmology Research Center, Department of Ophthalmology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
Shiraz University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate the levels of vitamin D in the serum of diabetic patients with and without diabetic retinopathy (DR).

methodsThirty patients with DR and thirty diabetic patients without retinopathy were included in this cross-sectional study. Based on ophthalmic examination, patients with DR were categorized into having non-proliferative retinopathy (NPDR) and proliferative retinopathy (PDR). Patients were tested for fasting blood sugar (FBS), hemoglobin A1C (HbA1C), 25-hydroxy vitamin D (25 (OH) D), and creatinine levels in the serum, and for urine protein. Vitamin D deficiency was defined as a serum 25 (OH) D level

resultsWe found that all diabetic patients had mild vitamin D deficiency (serum 25 (OH) D level = 10-20 ng/mL). The mean serum 25 (OH) D concentration in patients with DR was lower than in those without DR (12.10

conclusionThe present study demonstrated that patients with DR had lower levels of serum vitamin D compared with those without retinopathy.

Indexed as

25-Hydroxy Vitamin DDiabetes MellitusDiabetic Retinopathy

Identifiers

PMID32308951
PMCPMC7151504
OpenAlexW3016018377

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.