Flicker electroretinograms of eyes with cataract recorded with RETeval system before and after mydriasis

Gen Miura, Takayuki Baba, Toshiyuki Oshitari, Shuichi Yamamoto Department of Ophthalmology and Visual Science, Chiba University Graduate School of Medicine, Chiba, Japan Purpose: The aim of this study is to determine the effect of pupil size of eyes with cataracts on the flicker electroretinograms...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Miura G, Baba T, Oshitari T, Yamamoto S
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2018
Materias:	electroretinogram (ERG) flicker ERG cataract RETeval Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/0d844a84df1c4957bdad09cb6e44f4d2
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:0d844a84df1c4957bdad09cb6e44f4d2
record_format	dspace
spelling	oai:doaj.org-article:0d844a84df1c4957bdad09cb6e44f4d22021-12-02T05:00:01ZFlicker electroretinograms of eyes with cataract recorded with RETeval system before and after mydriasis1177-5483https://doaj.org/article/0d844a84df1c4957bdad09cb6e44f4d22018-03-01T00:00:00Zhttps://www.dovepress.com/flicker-electroretinograms-of-eyes-with-cataract-recorded-with-reteval-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Gen Miura, Takayuki Baba, Toshiyuki Oshitari, Shuichi Yamamoto Department of Ophthalmology and Visual Science, Chiba University Graduate School of Medicine, Chiba, Japan Purpose: The aim of this study is to determine the effect of pupil size of eyes with cataracts on the flicker electroretinograms (ERGs) elicited and recorded with the RETeval system.Patients and methods: Forty-one eyes of 41 patients (mean age, 76.5±7.3 years) that had grade 2 nuclear or cortical cataract without any other abnormalities were studied. Flicker ERGs were recorded before and after mydriatic drops instillation. The ERGs were elicited by the white light delivered at the frequency of 28.3 Hz and intensities of 2, 8, and 32 Td-s. The amplitudes and the implicit times of the flicker ERGs before and after mydriasis were compared.Results: There were no significant differences between the amplitudes before and after mydriasis (P=0.35, 2 Td-s; P=0.31, 8 Td-s; P=0.50, 32 Td-s). There were also no significant differences between the implicit times before and after mydriasis (P=0.86, 2 Td-s; P=0.98, 8 Td-s; P=0.95, 32 Td-s). The mean amplitudes and implicit times of the nuclear and cortical cataracts groups before the mydriasis were also not significantly different from those after mydriasis for all stimulus intensities.Conclusion: The lack of significant differences in the amplitudes and the implicit times of the flicker ERG of cataractous eyes before and after mydriasis indicated that the RETeval flicker ERGs in cataractous eyes is less affected by the pupil diameter. With our earlier study, it was assumed that the effect of cataracts on the RETeval flicker ERGs was due to the opacity of the crystalline lens, and the influence of the cataract would not be reduced or increased by mydriasis. Keywords: electroretinogram, ERG, flicker ERG, cataract, RETevalMiura GBaba TOshitari TYamamoto SDove Medical Pressarticleelectroretinogram (ERG)flicker ERGcataractRETevalOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 12, Pp 427-432 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	electroretinogram (ERG) flicker ERG cataract RETeval Ophthalmology RE1-994
spellingShingle	electroretinogram (ERG) flicker ERG cataract RETeval Ophthalmology RE1-994 Miura G Baba T Oshitari T Yamamoto S Flicker electroretinograms of eyes with cataract recorded with RETeval system before and after mydriasis
description	Gen Miura, Takayuki Baba, Toshiyuki Oshitari, Shuichi Yamamoto Department of Ophthalmology and Visual Science, Chiba University Graduate School of Medicine, Chiba, Japan Purpose: The aim of this study is to determine the effect of pupil size of eyes with cataracts on the flicker electroretinograms (ERGs) elicited and recorded with the RETeval system.Patients and methods: Forty-one eyes of 41 patients (mean age, 76.5±7.3 years) that had grade 2 nuclear or cortical cataract without any other abnormalities were studied. Flicker ERGs were recorded before and after mydriatic drops instillation. The ERGs were elicited by the white light delivered at the frequency of 28.3 Hz and intensities of 2, 8, and 32 Td-s. The amplitudes and the implicit times of the flicker ERGs before and after mydriasis were compared.Results: There were no significant differences between the amplitudes before and after mydriasis (P=0.35, 2 Td-s; P=0.31, 8 Td-s; P=0.50, 32 Td-s). There were also no significant differences between the implicit times before and after mydriasis (P=0.86, 2 Td-s; P=0.98, 8 Td-s; P=0.95, 32 Td-s). The mean amplitudes and implicit times of the nuclear and cortical cataracts groups before the mydriasis were also not significantly different from those after mydriasis for all stimulus intensities.Conclusion: The lack of significant differences in the amplitudes and the implicit times of the flicker ERG of cataractous eyes before and after mydriasis indicated that the RETeval flicker ERGs in cataractous eyes is less affected by the pupil diameter. With our earlier study, it was assumed that the effect of cataracts on the RETeval flicker ERGs was due to the opacity of the crystalline lens, and the influence of the cataract would not be reduced or increased by mydriasis. Keywords: electroretinogram, ERG, flicker ERG, cataract, RETeval
format	article
author	Miura G Baba T Oshitari T Yamamoto S
author_facet	Miura G Baba T Oshitari T Yamamoto S
author_sort	Miura G
title	Flicker electroretinograms of eyes with cataract recorded with RETeval system before and after mydriasis
title_short	Flicker electroretinograms of eyes with cataract recorded with RETeval system before and after mydriasis
title_full	Flicker electroretinograms of eyes with cataract recorded with RETeval system before and after mydriasis
title_fullStr	Flicker electroretinograms of eyes with cataract recorded with RETeval system before and after mydriasis
title_full_unstemmed	Flicker electroretinograms of eyes with cataract recorded with RETeval system before and after mydriasis
title_sort	flicker electroretinograms of eyes with cataract recorded with reteval system before and after mydriasis
publisher	Dove Medical Press
publishDate	2018
url	https://doaj.org/article/0d844a84df1c4957bdad09cb6e44f4d2
work_keys_str_mv	AT miurag flickerelectroretinogramsofeyeswithcataractrecordedwithretevalsystembeforeandaftermydriasis AT babat flickerelectroretinogramsofeyeswithcataractrecordedwithretevalsystembeforeandaftermydriasis AT oshitarit flickerelectroretinogramsofeyeswithcataractrecordedwithretevalsystembeforeandaftermydriasis AT yamamotos flickerelectroretinogramsofeyeswithcataractrecordedwithretevalsystembeforeandaftermydriasis
_version_	1718400873375203328

Flicker electroretinograms of eyes with cataract recorded with RETeval system before and after mydriasis

Ejemplares similares