alexa Development of rod function in term born and former preterm subjects.


Anatomy & Physiology: Current Research

Author(s): Fulton AB, Hansen RM, Moskowitz A

Abstract Share this page

Abstract PURPOSE: To provide an overview of some of our electroretinographic (ERG) and psychophysical studies of normal development of rod function and their application to retinopathy of prematurity (ROP). METHODS: ERG responses to full-field stimuli were recorded from dark adapted subjects. Rod photoreceptor sensitivity (SROD) was calculated by fit of a biochemical model of the activation of phototransduction to the ERG a-wave. Dark adapted psychophysical thresholds for detecting 2 degrees spots in parafoveal (10 degrees eccentric) and peripheral (30 degrees eccentric) retina were measured and the difference between the thresholds, Delta10-30, was examined as a function of age. SROD and Delta10-30 in term born and former preterm subjects were compared. RESULTS: In term born infants, (1) the normal developmental increase in SROD changes proportionately with the amount of rod visual pigment, rhodopsin, and (2) rod-mediated function in central retina is immature compared with that in peripheral retina. In subjects born prematurely, deficits in SROD persist long after active ROP has resolved. Maturation of rod-mediated thresholds in the central retina is prolonged by mild ROP. CONCLUSIONS: Characterization of the development of normal rod and rod-mediated function provides a foundation for understanding ROP.
This article was published in Optom Vis Sci and referenced in Anatomy & Physiology: Current Research

Relevant Expert PPTs

Relevant Speaker PPTs

  • Seema Narayan
    A comparative study of the link between real exchange rate of ASEAN countries and fossil fuel prices
    PDF Version
  • Navinchandra G. Ashar
    Comparative study of techno-economic evaluation of the production of liquid Sulphur Di Oxide
    PDF Version
  • Wei Gong
    Wei Gong-Huazhong-University-of-Science-and-Technology-China-Probabilistic-seismic-hazard-assessment-for-the-pseudo-negative-stiffness-control-of- a-steel-base-isolated-building-A-comparative-study-
    PPT Version | PDF Version
  • Abdullah Altin
    PPT Version | PDF Version
  • Nahla A El-Wakil
    Comparative study of enzymatic and chemical denaturation of wheat gluten and their cellulosic nanocomposites
    PPT Version | PDF Version
  • Krzysztof Wieczerzak
    A comparative transcriptome provides candidate genes for determination the cause of males infertility.
    PPT Version | PDF Version
  • Flavia Secco Tavares de Souza
    A Comparative Study Among Elective Conventional Surgery, Urgency/Emergency Conventional Approaching and Elective Videolaparoscopic Surgery on the Treatment of Hospitalized Patients at First Surgeric Clinic of Federal Hospital of Bonsucesso with a Diagnostic of Colorectal adenocarcinoma, between January 2010 and December 2012
    PPT Version | PDF Version
  • Rajendra K Ray
    Comparative Study And Improvement Of Shallow-Water Models
    PPT Version | PDF Version
  • Nisreen E. Mahmoud
    Parasitological and comparative pathological studies on monogenean infestation of cultured sea bream (Sparus aurata, Sparidae) in Egypt.
    PPT Version | PDF Version

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version