Evidence map›Paper›PMID 31908411›Full record

ArticleClinical ophthalmology (Auckland, N.Z.)2019

Changes in Tear Lipid Layer Thickness and Symptoms Following the Use of Artificial Tears with and Without Omega-3 Fatty Acids: A Randomized, Double-Masked, Crossover Study.

Jennifer S Fogt, Nick Fogt, P Ewen King-Smith, Haixia Liu, Joseph T Barr

Open access · goldAbstract readCase Reports
In one paragraph

Article in Clinical ophthalmology (Auckland, N.Z.), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.9field-weighted citation impact, top 22% 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

6 citing papers in PubMed, 16 citations in OpenAlex.

  1. Trial
  2. Observational
  3. Review
  4. Review
  5. Review
  6. Artificial Tears: A Systematic Review.Clinical optometry · 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

5 authors at 2 institutions in 1 country.

Jennifer S FogtOhio State University College of Optometry, Columbus, OH, USA.ORCID 0000-0001-6036-6926
Nick FogtOhio State University College of Optometry, Columbus, OH, USA.
P Ewen King-SmithOhio State University College of Optometry, Columbus, OH, USA.
Haixia LiuAllergan Plc, Irvine, CA, USA.
Joseph T BarrOhio State University College of Optometry, Columbus, OH, USA.
SUNY College of Optometry · USAllergan (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo determine if an eye drop containing omega-3 fatty acids (Refresh Optive MEGA-3

methodsPatients (≥30 years) with baseline LLT ≤75 nm completed the Current Symptoms Survey (CSS - a visual analog survey of dry eye symptoms), and LLT was measured pre- and post-instillation (15 and 60 mins) of their randomly assigned treatment. After washout, patients were tested with the other treatment. Primary endpoint: change in LLT from baseline. Secondary endpoint: CSS results.

resultsOf 21 patients enrolled, 19 completed the study. With the omega-3-containing eye drop, the mean (standard deviation) LLT increase from baseline at 15 mins was statistically significant in the overall field (8.8 [11.5] nm;

conclusionThe eye drop containing omega-3 fatty acids increased LLT at 15 mins, maintaining it at 1 hr post-instillation. Dryness symptoms also improved and maintained improved levels 1 hr after instillation, indicating that the product may benefit symptomatic patients with evaporative dry eye.

Indexed as

artificial tearsdry eyeomega-3 fatty acidsophthalmic solutionsurveytear lipid layer

Identifiers

PMID31908411
PMCPMC6930022
OpenAlexW2996226452

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.