Evidence map›Paper›PMID 34368499›Full record

ArticleAmerican journal of ophthalmology case reports2021

Bilateral idiopathic corneal opacity: A report of Ascher ring and a review of the literature.

M Megalla, E Li, P Branden, J Chow

Open access · goldAbstract readCase Reports
In one paragraph

Article in American journal of ophthalmology case reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact, top 86% 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

2 citing papers in PubMed, 1 citations in OpenAlex.

  1. Ascher ring associated with peripheral deep stromal opacities: A case report.American journal of ophthalmology case reports · 2026
    Article
  2. 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

4 authors at 1 institution in 1 country.

M MegallaYale Department of Ophthalmology, New Haven, CT, USA.
E LiYale Department of Ophthalmology, New Haven, CT, USA.
P BrandenYale Department of Ophthalmology, New Haven, CT, USA.
J ChowYale Department of Ophthalmology, New Haven, CT, USA.
Yale University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo present a case of a rare entity of Ascher ring, a bilateral corneal stromal opacification. OBSERVATION: A 70-year-old male with no ocular history who presented for cataract evaluation was found to have idiopathic bilateral circular stromal corneal rings.

conclusionsAfter completion of extensive history, examination, imaging analyses, and laboratory studies for workup of corneal opacities, we arrived at a diagnosis of Ascher corneal ring, an extremely rare entity. IMPORTANCE: A rare entity should be considered after excluding other etiologies.

Indexed as

AscherCorneaIdiopathicOpacityStroma

Identifiers

PMID34368499
PMCPMC8326342
OpenAlexW3184729863

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.