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Normal Values of Standard Full Field Electroretinography in an Iranian Population
PURPOSE: To determine normal values of standard full-field electroretinography (ERG) and to evaluate their variations with age in an Iranian population. METHODS: Through convenient sampling, 170 normal subjects 1-80 years of age were selected from residents of Tehran. ERG amplitudes and implicit tim...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Ophthalmic Research Center
2009
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3498556/ https://www.ncbi.nlm.nih.gov/pubmed/23198055 |
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author | Parvaresh, Mohammad-Mehdi Ghiasian, Leila Ghasemi Falavarjani, Khalil Soltan Sanjari, Mostafa Sadighi, Nadia |
author_facet | Parvaresh, Mohammad-Mehdi Ghiasian, Leila Ghasemi Falavarjani, Khalil Soltan Sanjari, Mostafa Sadighi, Nadia |
author_sort | Parvaresh, Mohammad-Mehdi |
collection | PubMed |
description | PURPOSE: To determine normal values of standard full-field electroretinography (ERG) and to evaluate their variations with age in an Iranian population. METHODS: Through convenient sampling, 170 normal subjects 1-80 years of age were selected from residents of Tehran. ERG amplitudes and implicit time values were measured according to recommendations by the International Society for Clinical Electrophysiology of Vision. Evaluations consisted of light-adapted ERG including single-white flash and 30-Hz flicker response; and dark-adapted ERG including rod, maximal dark-adapted and cone responses. RESULTS: No significant difference in ERG values was observed between men and women, or between right and left eyes. ERG amplitudes were lower (P=0.04) and implicit time values were greater (P=0.03) in subjects 70-80 years of age as compared to younger individuals. CONCLUSION: ERG parameters are significantly diminished with age. Our results may serve as a reference against which standard ERG responses can be compared. |
format | Online Article Text |
id | pubmed-3498556 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | Ophthalmic Research Center |
record_format | MEDLINE/PubMed |
spelling | pubmed-34985562012-11-29 Normal Values of Standard Full Field Electroretinography in an Iranian Population Parvaresh, Mohammad-Mehdi Ghiasian, Leila Ghasemi Falavarjani, Khalil Soltan Sanjari, Mostafa Sadighi, Nadia J Ophthalmic Vis Res Original Article PURPOSE: To determine normal values of standard full-field electroretinography (ERG) and to evaluate their variations with age in an Iranian population. METHODS: Through convenient sampling, 170 normal subjects 1-80 years of age were selected from residents of Tehran. ERG amplitudes and implicit time values were measured according to recommendations by the International Society for Clinical Electrophysiology of Vision. Evaluations consisted of light-adapted ERG including single-white flash and 30-Hz flicker response; and dark-adapted ERG including rod, maximal dark-adapted and cone responses. RESULTS: No significant difference in ERG values was observed between men and women, or between right and left eyes. ERG amplitudes were lower (P=0.04) and implicit time values were greater (P=0.03) in subjects 70-80 years of age as compared to younger individuals. CONCLUSION: ERG parameters are significantly diminished with age. Our results may serve as a reference against which standard ERG responses can be compared. Ophthalmic Research Center 2009-04 /pmc/articles/PMC3498556/ /pubmed/23198055 Text en |
spellingShingle | Original Article Parvaresh, Mohammad-Mehdi Ghiasian, Leila Ghasemi Falavarjani, Khalil Soltan Sanjari, Mostafa Sadighi, Nadia Normal Values of Standard Full Field Electroretinography in an Iranian Population |
title | Normal Values of Standard Full Field Electroretinography in an Iranian Population |
title_full | Normal Values of Standard Full Field Electroretinography in an Iranian Population |
title_fullStr | Normal Values of Standard Full Field Electroretinography in an Iranian Population |
title_full_unstemmed | Normal Values of Standard Full Field Electroretinography in an Iranian Population |
title_short | Normal Values of Standard Full Field Electroretinography in an Iranian Population |
title_sort | normal values of standard full field electroretinography in an iranian population |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3498556/ https://www.ncbi.nlm.nih.gov/pubmed/23198055 |
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