Evidence map›Paper›PMID 18654793›Full record

ArticleGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie2008

Comparison of visual function in pigmented and albino rats by electroretinography and visual evoked potentials.

Peter Heiduschka, Ulrich Schraermeyer

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing 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

24 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. ERG Responses in Albinism, Idiopathic Infantile Nystagmus, and Controls.Investigative ophthalmology & visual science · 2024
    Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Challenging a Myth and Misconception: Red-Light Vision in Rats.Animals : an open access journal from MDPI · 2020
    Article
  13. Article
  14. Article
  15. Comparison between albino and pigmented rabbit ERGs.Documenta ophthalmologica. Advances in ophthalmology · 2018
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

2 authors.

Peter HeiduschkaSection for Experimental Vitreoretinal Surgery, University Eye Hospital, Schleichstr. 12/1, D-72076, Tübingen, Germany. p.heiduschka@uni-tuebingen.de
Ulrich Schraermeyer

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo check differences in visual function between Wistar (albino) and Long-Evans (pigmented) rats.

methodsThe animals were born in our facilities and reared under identical light conditions avoiding bright light. Visual electrophysiology was performed at the ages of 1.5, 4, 7 and 10 months (electroretinography, ERG) and at 1.5 and 7 months (visual evoked potentials, VEP).

resultsERG measurements showed that: 1) The amplitudes of both scotopic and photopic b-waves were markedly larger in Long-Evans rats than in Wistar rats, and also the amplitudes of scotopic oscillatory potentials and photopic 30 Hz Flicker amplitudes, 2) scotopic a-wave amplitudes were larger in Wistar rats at low light intensities, whereas they were smaller in bright light, 3) both a-wave and b-wave latencies were shorter in Wistar rats, 4) the maximum response Rm(P3) was larger in Long-Evans rats, 5) the sensitivity parameter S was larger in Wistar rats, and 6) the post-receptoral response of cones was smaller in Wistar rats. In the VEP measurements, amplitudes of both photopic and scotopic visual evoked potentials of Long-Evans rats were only slightly larger than those of Wistar rats.

conclusionsERG b-wave amplitudes are markedly decreased in Wistar rats, which requires further investigation. As the b/a and OP/a ratios were also decreased in Wistar rats, it can be suggested that post-receptoral processing, in particular, is impaired in albino animals.

Indexed as

ElectroretinographyEvoked Potentials, VisualVision, OcularAdaptation, OcularAnimalsDark AdaptationOscillometryPhotic StimulationRatsRats, Long-EvansRats, WistarReaction TimeRetinal Cone Photoreceptor Cells

Identifiers

What OpenQuestion holds

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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.