Evidence map›Paper›PMID 41767740›Full record

ArticleJournal of ophthalmology2026

Disposable Printed CamBlobs Charts for Measuring Contrast Sensitivity in Patients With Glaucoma.

Shahina Pardhan, Rajiv Raman, Rekha Srinivasan, Suwin Hewage, John Kidd, Mapa Prabhath Piyasena

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of ophthalmology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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.

Shahina PardhanVision and Eye Research Institute, School of Medicine, Anglia Ruskin University, Young Street Cambridge, Cambridgeshire, CB1 2LZ, UK, anglia.ac.uk.ORCID https://orcid.org/0000-0003-2377-8387
Rajiv RamanDepartment of Ophthalmology, UF College of Medicine, Jacksonville, Florida, USA.ORCID https://orcid.org/0000-0001-5842-0233
Rekha SrinivasanShri Bhagwan Mahavir Vitreo-Retinal Services, Shankara Nethralaya College Road, Chennai, Tamil Nadu, 600 006, India.ORCID https://orcid.org/0000-0002-5926-7661
Suwin HewageRetina Research Unit of Department of Vitreo-Retina, National Eye Hospital, Colombo, Sri Lanka.ORCID https://orcid.org/0000-0002-8459-4840
John KiddVision and Eye Research Institute, School of Medicine, Anglia Ruskin University, Young Street Cambridge, Cambridgeshire, CB1 2LZ, UK, anglia.ac.uk.ORCID https://orcid.org/0009-0009-3837-3244
Mapa Prabhath PiyasenaVision and Eye Research Institute, School of Medicine, Anglia Ruskin University, Young Street Cambridge, Cambridgeshire, CB1 2LZ, UK, anglia.ac.uk.ORCID https://orcid.org/0000-0002-0236-0101

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: Contrast sensitivity (CS) is lowered in glaucoma. We aimed to assess whether a simple inexpensive CamBlobs CS test is just as effective as an established Pelli-Robson CS chart in assessing CS in people with glaucoma. Methods: This study included two-groups of participants (27 no ocular disease and 23 glaucoma patients) who underwent CS testing using CamBlobs chart and a Pelli-Robson chart in each eye. Agreement and reliability between CamBlobs and Pelli-Robson charts were examined using Bland-Altman plots and receiver operating characteristic (ROC) curves to assess the diagnostic test accuracy. Visual field data were also obtained and compared with CS data from both charts. Results: A total of 54 eyes of control and 44 eyes of glaucoma patients were included. There were significant differences in CS between the control and glaucoma groups measured by the CamBlobs chart ( Conclusions: CamBlobs charts are comparable to Pelli-Robson CS charts for assessing CS in people with glaucoma. CamBlobs offer a simple, portable method for CS testing beyond conventional clinical settings.

Indexed as

agreementCamBlobscontrast sensitivitydiagnostic accuracyglaucomaPelli–Robson

Identifiers

PMID41767740
PMCPMC12949085

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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.