Evidence map›Paper›PMID 21701875›Full record

ArticleDocumenta ophthalmologica. Advances in ophthalmology2011

Isolated mesopic rod and cone electroretinograms realized with a four-primary method.

Dingcai Cao, Joel Pokorny, Michael A Grassi

Abstract read
In one paragraph

Article in Documenta ophthalmologica. Advances in ophthalmology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
0.8field-weighted citation impact, top 28% 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

15 citing papers in PubMed, 23 citations in OpenAlex.

  1. Article
  2. Article
  3. The morphology of human rod ERGs obtained by silent substitution stimulation.Documenta ophthalmologica. Advances in ophthalmology · 2017
    Article
  4. Abnormal 8-Hz flicker electroretinograms in carriers of X-linked retinoschisis.Documenta ophthalmologica. Advances in ophthalmology · 2016
    Article
  5. Article
  6. Article
  7. A method for estimating intrinsic noise in electroretinographic (ERG) signals.Documenta ophthalmologica. Advances in ophthalmology · 2015
    Article
  8. Rod and cone contributions to the dark-adapted 15-Hz flicker electroretinogram.Documenta ophthalmologica. Advances in ophthalmology · 2015
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Retinal safety and toxicity study of artesunateAdvances in ophthalmology practice and research
    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

3 authors at 1 institution in 1 country.

Dingcai CaoDepartment of Surgery, Section of Ophthalmology and Visual Science, The University of Chicago, IL 60637, USA. d-cao@uchicago.edu
Joel Pokorny
Michael A Grassi
University of Chicago · US

Funding

Rod Cone Interactions in Mesopic VisionR01EY019651 · NEI · UNIVERSITY OF ILLINOIS AT CHICAGO · PI CAO, DINGCAI · 2010 to 2013
$1.3M
Genomic and Genetic Studies of Diabetic RetinopathyK08EY019089 · NEI · UNIVERSITY OF ILLINOIS AT CHICAGO · PI GRASSI, MICHAEL A. · 2008 to 2012
$1.2M
NEI NIH HHS K08 EY019089NEI NIH HHS K08 EY019089-02NEI NIH HHS R01 EY019651
6 · The paper itself

Abstract

The purpose of this study was to evaluate the feasibility of measuring rod and cone electroretinograms (ERGs) at a single mesopic adaptation level. To accomplish this, a four-primary photostimulator was implemented using a commercially available ERG system (Diagnosys ColorDome) to generate three types of stimuli that temporally modulated rods alone, cones alone, and rods and cones simultaneously. For each stimulus type, ERGs were recorded as a function of temporal frequency (2, 4, 8, or 16 Hz) and mesopic light levels (0.02, 0.16, or 1.26 cd/m(2)) in normal observers and patients with retinitis pigmentosa (RP) or cone-rod degeneration. The normal observers ERG waveforms showed a clear periodic pattern, mirroring the sinusoidal stimuli. At all light levels, rod responses were always higher than cone responses for temporal frequencies between 2 and 8 Hz, suggesting that rods dominated the responses. Cone responses were minimal at the lowest light level and increased with increases in light level. The amplitude of the response to the combined stimuli was intermediate between that of the isolated cone and the isolated rod stimuli for all light levels. Good receptoral isolation was confirmed by the results showing (1) minimal or no rod ERGs but recordable cone ERGs in the patients and (2) high correlation between the ERG amplitudes obtained from the four-primary method and those from the ISCEV standard clinical protocol in normal observers.

Indexed as

Adaptation, OcularAdolescentAdultAgedElectroretinographyFeasibility StudiesFemaleHumansMaleMesopic VisionMiddle AgedPhotoreceptor Cells, VertebrateRetinal DegenerationRetinitis PigmentosaYoung Adult

Identifiers

PMID21701875
PMCPMC3150787
OpenAlexW2100463452

What OpenQuestion holds

Textmetadata
LicenceTDM
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.