Evidence map›Paper›PMID 31989286›Full record

Observational studyGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie2020

Distribution of peripheral lesions identified by mydriatic ultra-wide field fundus imaging in diabetic retinopathy.

Aditya Verma, Ahmed Roshdy Alagorie, Kim Ramasamy, Jano van Hemert, N K Yadav, Rajeev R Pappuru, Adnan Tufail, Muneesawar Gupta Nittala, SriniVas R Sadda, Rajiv Raman and 1 more

Abstract readMulticenter StudyObservational Study
PubMed Publisher
In one paragraph

Observational study in Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

26 citing papers in PubMed, 33 citations in OpenAlex.

  1. Review
  2. Association of predominant peripheral lesions with retinal microvasculature and risk of vitreous hemorrhage in proliferative diabetic retinopathy.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
    Article
  3. Article
  4. Article
  5. Observational
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Observational
  13. Review
  14. Article
  15. Article
  16. Review
  17. Telemedicine in diabetic retinopathy screening in India.Indian journal of ophthalmology · 2021
    Review
  18. Review
  19. Article
  20. 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

11 authors at 9 institutions in 4 countries.

Aditya VermaDoheny Image Reading Center, Doheny Eye Institute, 1350 San Pablo St., Los Angeles, CA, 90033, USA.
Ahmed Roshdy AlagorieDoheny Image Reading Center, Doheny Eye Institute, 1350 San Pablo St., Los Angeles, CA, 90033, USA.
Kim RamasamyDepartment of Vitreo-Retinal Services, Aravind Eye Hospital, Madurai, Tamil Nadu, India.
Jano van HemertOptos Plc, Dunfermline, Dunfermline, UK.
N K YadavNarayana Nethralaya, Chord Road, 1st 'R' Block, Rajajinagar, Bangalore, 560010, India.
Rajeev R PappuruSmt. Kanuri Santhamma Vitreoretina Center, LV Prasad Eye Institute, Hyderabad, India.
Adnan TufailMoorfields Eye Hospital, London, UK.
Muneesawar Gupta NittalaDoheny Image Reading Center, Doheny Eye Institute, 1350 San Pablo St., Los Angeles, CA, 90033, USA.
SriniVas R SaddaDoheny Image Reading Center, Doheny Eye Institute, 1350 San Pablo St., Los Angeles, CA, 90033, USA.
Rajiv RamanSankara Nethralaya, 18, College road, Chennai, India. rajivpgraman@gmail.com.
Indian Retina Research Associates (IRRA)
Sankara Nethralaya · INAravind Eye Hospital · INDigital Catapult · GBDoheny Eye Institute · USL V Prasad Eye Institute · INMoorfields Eye Hospital · GBNarayana Nethralaya · INTanta University · EGUniversity of California, Los Angeles · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo analyze the distribution of diabetic retinopathy (DR) lesions in an Indian population using ultra-wide field (UWF) fundus imaging.

methodsSeven hundred fifteen subjects (1406 eyes) with diabetic retinopathy in India were enrolled in this multicenter, prospective, observational study using UWF pseudocolor imaging with Optos Daytona Plus (Optos plc, Dunfermline, Scotland, UK). Images were transmitted to Doheny Image Reading Center, Los Angeles, CA, for grading. The ETDRS grid was overlaid on stereographic projections of UWF images, and images were graded independently by 2 masked graders. Lesion distribution was graded as predominantly central (PCL) or predominantly peripheral (PPL) according to previous criteria, considering both lesion number and area. An image was graded as PPL if > 50% of the lesion area was seen in at least one peripheral field as compared with the corresponding ETDRS field. Diabetic retinopathy severity was also assessed based on the International Classification of Diabetic Retinopathy (ICDR) grading scale. The main outcome measures were lesion distribution (PPL versus PCL): overall and within specific fields in eyes with various grades of DR.

resultsLesion distribution was rated to be PPL in 37% of eyes and PCL in 63% of eyes (P < 0.003). The frequency of a PPL distribution varied significantly across all ICDR severity levels, with frequencies of mild non-proliferative DR (NPDR) (30.9%), moderate NPDR (40.3%), severe NPDR (38.5%) and PDR (34.9%), P = 0.005. When assessing which individual fields were rated to show a PPL distribution, the frequency was greatest in field 4 and least in field 7. For any grade of DR, temporal fields showed the greatest PPL frequency, followed in order by the superior, inferior, and nasal fields (P < 0.001). Only 3.5% of eyes showed PPL distribution in all five peripheral fields.

conclusionsOne-third of the UWF images showed a PPL distribution in this cohort with the temporal quadrant having the widest distribution of PPL. As the PPL distribution varied significantly between various grades of DR, UWF imaging may prove to be important for screening of referral warranted retinopathy.

Indexed as

AdultDiabetic RetinopathyDisease ProgressionFemaleFollow-Up StudiesHumansIncidenceIndiaMaleMiddle AgedMydriaticsOphthalmoscopyProspective StudiesRetinaSeverity of Illness IndexSlit Lamp MicroscopyMydriaticsDiabetic retinopathyPredominantly peripheral lesionsUltra-wide field imaging

Identifiers

PMID31989286
OpenAlexW3002607851

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.