Evidence map›Paper›PMID 33229666›Full record

ArticleIndian journal of ophthalmology2020

Study of tear film optics and its impact on quality of vision.

Sharon D'Souza, Sriram Annavajjhala, Prashansa Thakur, Ritika Mullick, S J Tejal, Naren Shetty

Open access · diamondAbstract read
In one paragraph

Article in Indian journal of ophthalmology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 8% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Guideline
  2. Trial
  3. Dynamic Tear Film Stability Assessed via an Open-View Double-Pass Imaging System.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2026
    Article
  4. Dual Evaluation ofJournal of clinical medicine · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Solving STODS-Surgical Temporary Ocular Discomfort Syndrome.Diagnostics (Basel, Switzerland) · 2023
    Review
  11. Article
  12. Article
  13. 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

6 authors at 1 institution in 1 country.

Sharon D'SouzaNarayana Nethralaya Eye Hospital, Bengaluru, Karnataka, India.
Sriram AnnavajjhalaNarayana Nethralaya Eye Hospital, Bengaluru, Karnataka, India.
Prashansa ThakurNarayana Nethralaya Eye Hospital, Bengaluru, Karnataka, India.
Ritika MullickNarayana Nethralaya Eye Hospital, Bengaluru, Karnataka, India.
S J TejalNarayana Nethralaya Eye Hospital, Bengaluru, Karnataka, India.
Naren ShettyNarayana Nethralaya Eye Hospital, Bengaluru, Karnataka, India.
Narayana Nethralaya · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate the relation of the tear film on the quality of vision comparing parameters in normal patients to those having dry eye disease.

methods50 normal and 50 eyes with dry eye disease (DED) were included in the study. Patients were screened for dry eye with Schirmer's test, tear break up time, ocular surface staining, and assessment of meibomian gland disease. Their quality of vision was assessed using the Optical quality analysis system (OQAS). The results of dry eye evaluation were correlated with the parameters on the OQAS especially the mean objective scatter index (OSI).

resultsPatients with dry eye and unstable tear film were found to have a significantly worse quality of vision and optical scatter (P < 0.05). They were also noted to have fluctuation of vision between blinks.

conclusionTear film optics can have an important bearing on the quality of vision and quality of life. A detailed assessment preoperatively will help improve surgical outcomes and patient satisfaction.

Indexed as

Dry Eye SyndromesLacerationsBlinkingHumansQuality of LifeTearsDry eyeevaluationoptical qualityvision

Identifiers

PMID33229666
PMCPMC7857002
OpenAlexW3109322222

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.