Steady-State Pattern Electroretinogram and Frequency Doubling Technology in Adult Dyslexic Readers

Costantino Schiavi, Alessandro Finzi, Mauro Cellini Department of Experimental, Diagnostic, and Specialty Medicine, Ophthalmology Service, University of Bologna, Bologna 40138, ItalyCorrespondence: Mauro CelliniPoliclinico Sant’Orsola-Malpighi, Ophthalmology Service, University of Bologna,...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Schiavi C, Finzi A, Cellini M
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2019
Materias:
Acceso en línea:https://doaj.org/article/0aefbcf03b4c4d76a0ab8d20ffba3ab6
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:0aefbcf03b4c4d76a0ab8d20ffba3ab6
record_format dspace
spelling oai:doaj.org-article:0aefbcf03b4c4d76a0ab8d20ffba3ab62021-12-02T06:04:03ZSteady-State Pattern Electroretinogram and Frequency Doubling Technology in Adult Dyslexic Readers1177-5483https://doaj.org/article/0aefbcf03b4c4d76a0ab8d20ffba3ab62019-12-01T00:00:00Zhttps://www.dovepress.com/steady-state-pattern-electroretinogram-and-fdt-in-adult-dyslexic-reade-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Costantino Schiavi, Alessandro Finzi, Mauro Cellini Department of Experimental, Diagnostic, and Specialty Medicine, Ophthalmology Service, University of Bologna, Bologna 40138, ItalyCorrespondence: Mauro CelliniPoliclinico Sant’Orsola-Malpighi, Ophthalmology Service, University of Bologna, Via Pelagio Palagi 9, Bologna 40138, ItalyTel/Fax +39 0516362835Email mauro.cellini@gmail.comPurpose: Dyslexia is a reading disorder with neurological deficit of the magnocellular pathway. The aim of our study was to evaluate the functionality of the magnocellular–Y (M–Y) retinal ganglion cells in adult dyslexic subjects using steady-state pattern electroretinogram and frequency doubling perimetry.Methods: Ten patients with dyslexia (7 females and 3 males), mean age 28.7 ± 5.9 years, and 10 subjects without dyslexia (6 females and 4 males), mean age 27.8 ± 4.1 years, were enrolled in the study and underwent both steady-state pattern-electroretinogram examination and frequency doubling perimetry.Results: There was a significant difference in the amplitude of the steady-state pattern electroretinogram of the dyslexic group and the healthy controls (0.610±0.110 μV vs 1.250±0.296 μV; p=0.0001). Furthermore, in the dyslexic group we found a significant difference between the right eye and the left eye (0.671±0.11 μV vs 0.559±0.15 μV; p=0.001). With frequency doubling perimetry, the pattern standard deviation index increased in dyslexic eyes compared to healthy controls (4.40±0.81 dB vs 2.99±0.35 dB; p=0.0001) and in the left eye versus the right eye of the dyslexic group (4.43±1.10 dB vs 3.66±0.96 dB; p=0.031). There was a correlation between the reduction in the wave amplitude of the pattern electroretinogram and the simultaneous increase in the pattern standard deviation values (r=0.80; p=0.001). This correlation was also found to be present in the left eye (r=0.93; p<0.001) and the right eye (r=0.81; p=0.005) of dyslexic subjects.Conclusion: Our study shows that there was an alteration of the activity of M–Y retinal ganglion cells, especially in the left eye. It confirms that in dyslexia there is a deficit of visual attention with damage not only of the magnocellular-dorsal pathway but also of the M-Y retinal ganglion cells.Keywords: steady-state pattern-electroretinogram, frequency doubling technology perimetry, retino-geniculate pathways, dyslexia  Schiavi CFinzi ACellini MDove Medical Pressarticlesteady-state pattern-electroretinogramfrequency doubling technology perimetryretino-geniculate pathwaysdyslexia.OphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 13, Pp 2451-2459 (2019)
institution DOAJ
collection DOAJ
language EN
topic steady-state pattern-electroretinogram
frequency doubling technology perimetry
retino-geniculate pathways
dyslexia.
Ophthalmology
RE1-994
spellingShingle steady-state pattern-electroretinogram
frequency doubling technology perimetry
retino-geniculate pathways
dyslexia.
Ophthalmology
RE1-994
Schiavi C
Finzi A
Cellini M
Steady-State Pattern Electroretinogram and Frequency Doubling Technology in Adult Dyslexic Readers
description Costantino Schiavi, Alessandro Finzi, Mauro Cellini Department of Experimental, Diagnostic, and Specialty Medicine, Ophthalmology Service, University of Bologna, Bologna 40138, ItalyCorrespondence: Mauro CelliniPoliclinico Sant’Orsola-Malpighi, Ophthalmology Service, University of Bologna, Via Pelagio Palagi 9, Bologna 40138, ItalyTel/Fax +39 0516362835Email mauro.cellini@gmail.comPurpose: Dyslexia is a reading disorder with neurological deficit of the magnocellular pathway. The aim of our study was to evaluate the functionality of the magnocellular–Y (M–Y) retinal ganglion cells in adult dyslexic subjects using steady-state pattern electroretinogram and frequency doubling perimetry.Methods: Ten patients with dyslexia (7 females and 3 males), mean age 28.7 ± 5.9 years, and 10 subjects without dyslexia (6 females and 4 males), mean age 27.8 ± 4.1 years, were enrolled in the study and underwent both steady-state pattern-electroretinogram examination and frequency doubling perimetry.Results: There was a significant difference in the amplitude of the steady-state pattern electroretinogram of the dyslexic group and the healthy controls (0.610±0.110 μV vs 1.250±0.296 μV; p=0.0001). Furthermore, in the dyslexic group we found a significant difference between the right eye and the left eye (0.671±0.11 μV vs 0.559±0.15 μV; p=0.001). With frequency doubling perimetry, the pattern standard deviation index increased in dyslexic eyes compared to healthy controls (4.40±0.81 dB vs 2.99±0.35 dB; p=0.0001) and in the left eye versus the right eye of the dyslexic group (4.43±1.10 dB vs 3.66±0.96 dB; p=0.031). There was a correlation between the reduction in the wave amplitude of the pattern electroretinogram and the simultaneous increase in the pattern standard deviation values (r=0.80; p=0.001). This correlation was also found to be present in the left eye (r=0.93; p<0.001) and the right eye (r=0.81; p=0.005) of dyslexic subjects.Conclusion: Our study shows that there was an alteration of the activity of M–Y retinal ganglion cells, especially in the left eye. It confirms that in dyslexia there is a deficit of visual attention with damage not only of the magnocellular-dorsal pathway but also of the M-Y retinal ganglion cells.Keywords: steady-state pattern-electroretinogram, frequency doubling technology perimetry, retino-geniculate pathways, dyslexia  
format article
author Schiavi C
Finzi A
Cellini M
author_facet Schiavi C
Finzi A
Cellini M
author_sort Schiavi C
title Steady-State Pattern Electroretinogram and Frequency Doubling Technology in Adult Dyslexic Readers
title_short Steady-State Pattern Electroretinogram and Frequency Doubling Technology in Adult Dyslexic Readers
title_full Steady-State Pattern Electroretinogram and Frequency Doubling Technology in Adult Dyslexic Readers
title_fullStr Steady-State Pattern Electroretinogram and Frequency Doubling Technology in Adult Dyslexic Readers
title_full_unstemmed Steady-State Pattern Electroretinogram and Frequency Doubling Technology in Adult Dyslexic Readers
title_sort steady-state pattern electroretinogram and frequency doubling technology in adult dyslexic readers
publisher Dove Medical Press
publishDate 2019
url https://doaj.org/article/0aefbcf03b4c4d76a0ab8d20ffba3ab6
work_keys_str_mv AT schiavic steadystatepatternelectroretinogramandfrequencydoublingtechnologyinadultdyslexicreaders
AT finzia steadystatepatternelectroretinogramandfrequencydoublingtechnologyinadultdyslexicreaders
AT cellinim steadystatepatternelectroretinogramandfrequencydoublingtechnologyinadultdyslexicreaders
_version_ 1718400033861140480