Evidence map›Paper›PMID 25415664›Full record

ArticleMedicine2014

Efficacy of systemic vitamin C supplementation in reducing corneal opacity resulting from infectious keratitis.

Yong-Wun Cho, Woong-Sun Yoo, Seong-Jae Kim, In-Young Chung, Seong-Wook Seo, Ji-Myong Yoo

Open access · goldAbstract read
In one paragraph

Article in Medicine, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 18% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 45 citations in OpenAlex.

  1. The Efficacy of Oral Vitamin Supplementation in Dry Eye Disease: A Systematic Review.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2026
    Pooled it
  2. Review
  3. Article
  4. Article
  5. Article
  6. Effects of theAnimals : an open access journal from MDPI · 2023
    Article
  7. Article
  8. Review
  9. Genipin Delays Corneal Stromal Enzymatic Digestion.Translational vision science & technology · 2021
    Article
  10. Review
  11. Article
  12. Review
  13. Journal of clinical medicine · 2020
    Article
  14. Ocular Surface Disease in Rodents (Guinea Pigs, Mice, Rats, Chinchillas).The veterinary clinics of North America. Exotic animal practice · 2019
    Review
  15. Article
  16. Article
  17. Article
  18. Peripheral Ulcerative Keratitis: A Review.Journal of ophthalmic & vision research
    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

6 authors at 1 institution in 1 country.

Yong-Wun ChoDepartment of Ophthalmology (Y-WC, W-SY, S-JK, I-YC, S-WS, J-MY), College of Medicine; and Gyeongsang Institute of Health Science (S-JK, I-YC, S-WS, J-MY), Gyeongsang National University, Jinju, South Korea.
Woong-Sun Yoo
Seong-Jae Kim
In-Young Chung
Seong-Wook Seo
Ji-Myong Yoo
Gyeongsang National University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The objective of this study was to determine the effect of vitamin C supplementation on reducing the size of corneal opacity resulting from infectious keratitis.The study included 82 patients (82 affected eyes), admitted for infectious keratitis from January 2009 to August 2013, who were followed for more than 3 months. Patients were divided into control, oral vitamin C (3 g/d), and intravenous vitamin C (20 g/d) groups during hospitalization. Corneal opacity sizes were measured using anterior segment photographs and Image J program (version 1.27; National Institutes of Health, Jinju, South Korea) at admission, discharge, and final follow-up. The corneal opacity size used for analysis was the measured opacity size divided by the size of the whole cornea.The corneal opacity size decreased by 0.03 ± 0.10 in the oral vitamin C group, 0.07 ± 0.22 in the intravenous vitamin C group, and 0.02 ± 0.15 in the control group. Intravenous vitamin C reduced the corneal opacity size more than oral vitamin C (P = 0.043). Intravenous vitamin C produced greater reduction in corneal opacity size in younger patients (P = 0.015) and those with a hypopyon (P = 0.036).Systemic vitamin C supplementation reduced the size of corneal opacity resulting from infectious keratitis. Intravenous vitamin C was more beneficial than oral supplementation, especially in younger patients and those with hypopyon.

Indexed as

Dietary SupplementsAntioxidantsAscorbic AcidCorneal OpacityFemaleHumansKeratitisMaleMiddle AgedRetrospective StudiesTreatment OutcomeAntioxidantsAscorbic Acid

Identifiers

PMID25415664
PMCPMC4616340
OpenAlexW2334805642

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.