Evidence map›Paper›PMID 42545772›Full record

ArticleIndian journal of ophthalmology2026

Clinical outcomes after implantation of a combination of intrastromal corneal ring segments in different optical zones in advanced keratoconus.

Jordana S B Soares, Mateus L Dos Santos, Leonardo T Costa, Edna M Almodin, Bernardo K Moscovici, Guilherme Ferrara, Sandro A Coscarelli, Paulo Ferrara

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Indian journal of ophthalmology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

8 authors.

Jordana S B SoaresDepartment of Ophthalmology, Universidade Federal de Goiás, Goiânia-GO, Brazil.
Mateus L Dos SantosDepartment of Ophthalmology, Clínica de Olhos Leitão Guerra, Salvador-BA, Brazil.
Leonardo T CostaDepartment of Ophthalmology, Centro de Excelencia em Oftalmologia, Para de Minas- MG, Brazil.
Edna M AlmodinDepartment of Ophthalmology, Hospital de Olhos Pro Visão, Maringa-PR, Brazil.
Bernardo K MoscoviciDepartment of Ophthalmology, Hospital Oftalmológico Visão Laser, Santos-SP, Brazil.
Guilherme FerraraDepartment of Ophthalmology, Clinica de Olhos Dr Paulo Ferrara, Belo Horizonte-MG, Brazil.
Sandro A CoscarelliDepartment of Ophthalmology, Clinica de Olhos Ennio Coscarelli, Belo Horizonte-MG, Brazil.
Paulo FerraraDepartment of Ophthalmology, Clinica de Olhos Dr Paulo Ferrara, Belo Horizonte-MG, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate the efficacy and safety of combined intrastromal corneal ring segment (ICRS) implantation in different optical zones for advanced keratoconus.

methodsThis retrospective study analyzed 32 eyes from 30 patients who underwent combined implantation of an ICRS (320° arc, 200 µm) in the 5-mm zone and a high-myopia ICRS (400 µm) in the 6-mm zone. Pre- and postoperative (6 months) assessments included best-corrected distance visual acuity (BCVA), manifest refraction spherical equivalent (MRSE), keratometry (K), and asphericity (Q-value).

resultsA total of 32 eyes from 30 patients (mean age: 31.1 ± 10.43 years) were analyzed. Significant postoperative improvements were observed in BCVA ( P = 0.002), MRSE ( P < 0.001), K1, K2, mean K ( P < 0.001), maximum K, tomographic astigmatism, and Q-value ( P < 0.001). No intraoperative or postoperative complications were reported.

conclusionsCombined ICRS and high-myopia ICRS implantation improves visual acuity, reduces refractive error, and enhances corneal topography in advanced keratoconus. Further studies are needed to confirm long-term stability and safety.

Indexed as

Corneal StromaKeratoconusProstheses and ImplantsProsthesis ImplantationRefraction, OcularVisual AcuityAdolescentAdultCorneal TopographyFemaleFollow-Up StudiesHumansMaleMiddle AgedProsthesis DesignRetrospective StudiesHM-ICRSHM ringintrastromal corneal ring segmentskeratoconus

Identifiers

PMID42545772
PMCPMC13529039

What OpenQuestion holds

Textmetadata
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.