Evidence map›Paper›PMID 34376917›Full record

ArticleJournal of clinical biochemistry and nutrition2021

Effects of anthocyanin, astaxanthin, and lutein on eye functions: a randomized, double-blind, placebo-controlled study.

Yuki Kizawa, Takahiro Sekikawa, Masakatsu Kageyama, Haruna Tomobe, Riyo Kobashi, Takahiro Yamada

Open access · diamondAbstract read
In one paragraph

Article in Journal of clinical biochemistry and nutrition, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 2 pooled it
3.9field-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

17 citing papers in PubMed, 2 syntheses or guidelines pooled it, 26 citations in OpenAlex.

  1. Pooled it
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  8. Article
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  13. Impact of cyanidin 3-Journal of clinical biochemistry and nutrition · 2023
    Article
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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.

Yuki KizawaBGG Japan Co., Ltd., 8F Ginza Kobikicho Building, 8-18-1 Ginza, Chuo-ku, Tokyo 104-0061, Japan.
Takahiro SekikawaBGG Japan Co., Ltd., 8F Ginza Kobikicho Building, 8-18-1 Ginza, Chuo-ku, Tokyo 104-0061, Japan.
Masakatsu KageyamaDHC Corporation, Laboratories Division 2, 2-42 Hamada, Mihama-ku, Chiba-shi, Chiba, 261-0025, Japan.
Haruna TomobeDHC Corporation, Laboratories Division 2, 2-42 Hamada, Mihama-ku, Chiba-shi, Chiba, 261-0025, Japan.
Riyo KobashiDHC Corporation, Laboratories Division 2, 2-42 Hamada, Mihama-ku, Chiba-shi, Chiba, 261-0025, Japan.
Takahiro YamadaArio Nishiarai Eye Clinic, 2F Ario Nishiarai, 1-20-1 Nishiarai Sakae-cho, Adachi-ku, Tokyo 123-0843, Japan.
JGC (Japan) · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We examined the effects of a test food containing anthocyanin, astaxanthin, and lutein on the eye function in healthy Japanese adults with eye fatigue after operating visual display terminals. Forty-four subjects were randomly but equally assigned to the active or placebo group. Two active or placebo capsules were taken once daily for 6 weeks. Accommodative function, tear film break-up time, visual acuity, the value of Schirmer's test, macular pigment optical density level, muscle hardness, and a questionnaire were evaluated before and after a 6-week intervention. Each group included 20 subjects in the efficacy analysis. The active group showed a significant improvement in the percentage of pupillary response of an average of both eyes and dominant eye pre- and post-visual display terminal operation at 6 weeks compared with the placebo group. Moreover, the active group showed a significant improvement in the scores of "A sensation of trouble in focusing the eyes" and "Difficulty in seeing objects in one's hand and nearby, or fine print" compared with the placebo group between before and after ingestion. Therefore, 6-weeks consumption of the test food inhibited a decrease in the accommodative function caused by visual display terminal operation (UMIN000036989).

Indexed as

accommodative functionanthocyaninastaxanthinluteinvisual display terminals

Identifiers

PMID34376917
PMCPMC8325772
OpenAlexW3128032880

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.