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Predictive value of visual evoked potentials, relative afferent pupillary defect, and orbital fractures in patients with traumatic optic neuropathy

BACKGROUND: The purpose of this study was to determine the predictive value of flash visual-evoked potentials (VEP), relative afferent pupillary defect, and presence of orbital fractures in patients with traumatic optic neuropathy. METHODS: A prospective study was conducted in 15 patients with indir...

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Autores principales: Tabatabaei, Seyed Ali, Soleimani, Mohammad, Alizadeh, Mahdi, Movasat, Morteza, Mansoori, Mohammad Reza, Alami, Zakieh, Foroutan, Alireza, Joshaghani, Mahmood, Safari, Saeid, Goldiz, Arzhang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Dove Medical Press 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3151564/
https://www.ncbi.nlm.nih.gov/pubmed/21845028
http://dx.doi.org/10.2147/OPTH.S21409
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author Tabatabaei, Seyed Ali
Soleimani, Mohammad
Alizadeh, Mahdi
Movasat, Morteza
Mansoori, Mohammad Reza
Alami, Zakieh
Foroutan, Alireza
Joshaghani, Mahmood
Safari, Saeid
Goldiz, Arzhang
author_facet Tabatabaei, Seyed Ali
Soleimani, Mohammad
Alizadeh, Mahdi
Movasat, Morteza
Mansoori, Mohammad Reza
Alami, Zakieh
Foroutan, Alireza
Joshaghani, Mahmood
Safari, Saeid
Goldiz, Arzhang
author_sort Tabatabaei, Seyed Ali
collection PubMed
description BACKGROUND: The purpose of this study was to determine the predictive value of flash visual-evoked potentials (VEP), relative afferent pupillary defect, and presence of orbital fractures in patients with traumatic optic neuropathy. METHODS: A prospective study was conducted in 15 patients with indirect traumatic optic neuropathy. All patients underwent a thorough ophthalmic examination. Initial visual acuity, final visual acuity, and relative afferent pupillary defect were determined, and visual acuity was converted into logMAR units. We performed flash VEP and an orbital computed tomography scan in all patients. RESULTS: There was a good correlation between relative afferent pupillary defect and final visual acuity (r = −0.83), and better initial visual acuity could predict better final visual acuity (r = 0.92). According to findings from flash VEP parameters, there was a relationship between final visual acuity and amplitude ratio of the wave (r = 0.59) and latency ratio of the wave (r = −0.61). Neither primary visual acuity nor final visual acuity was related to the presence of orbital fractures in the orbital CT scan. CONCLUSION: Patients with traumatic optic neuropathy often present with severe vision loss. Flash VEP, poor initial visual acuity, and higher grade of relative afferent pupillary defect could predict final visual acuity in these patients. Presence of orbital fracture was not a predictive factor for primary visual acuity or final visual acuity.
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spelling pubmed-31515642011-08-15 Predictive value of visual evoked potentials, relative afferent pupillary defect, and orbital fractures in patients with traumatic optic neuropathy Tabatabaei, Seyed Ali Soleimani, Mohammad Alizadeh, Mahdi Movasat, Morteza Mansoori, Mohammad Reza Alami, Zakieh Foroutan, Alireza Joshaghani, Mahmood Safari, Saeid Goldiz, Arzhang Clin Ophthalmol Original Research BACKGROUND: The purpose of this study was to determine the predictive value of flash visual-evoked potentials (VEP), relative afferent pupillary defect, and presence of orbital fractures in patients with traumatic optic neuropathy. METHODS: A prospective study was conducted in 15 patients with indirect traumatic optic neuropathy. All patients underwent a thorough ophthalmic examination. Initial visual acuity, final visual acuity, and relative afferent pupillary defect were determined, and visual acuity was converted into logMAR units. We performed flash VEP and an orbital computed tomography scan in all patients. RESULTS: There was a good correlation between relative afferent pupillary defect and final visual acuity (r = −0.83), and better initial visual acuity could predict better final visual acuity (r = 0.92). According to findings from flash VEP parameters, there was a relationship between final visual acuity and amplitude ratio of the wave (r = 0.59) and latency ratio of the wave (r = −0.61). Neither primary visual acuity nor final visual acuity was related to the presence of orbital fractures in the orbital CT scan. CONCLUSION: Patients with traumatic optic neuropathy often present with severe vision loss. Flash VEP, poor initial visual acuity, and higher grade of relative afferent pupillary defect could predict final visual acuity in these patients. Presence of orbital fracture was not a predictive factor for primary visual acuity or final visual acuity. Dove Medical Press 2011 2011-07-25 /pmc/articles/PMC3151564/ /pubmed/21845028 http://dx.doi.org/10.2147/OPTH.S21409 Text en © 2011 Tabatabaei et al, publisher and licensee Dove Medical Press Ltd. This is an Open Access article which permits unrestricted noncommercial use, provided the original work is properly cited.
spellingShingle Original Research
Tabatabaei, Seyed Ali
Soleimani, Mohammad
Alizadeh, Mahdi
Movasat, Morteza
Mansoori, Mohammad Reza
Alami, Zakieh
Foroutan, Alireza
Joshaghani, Mahmood
Safari, Saeid
Goldiz, Arzhang
Predictive value of visual evoked potentials, relative afferent pupillary defect, and orbital fractures in patients with traumatic optic neuropathy
title Predictive value of visual evoked potentials, relative afferent pupillary defect, and orbital fractures in patients with traumatic optic neuropathy
title_full Predictive value of visual evoked potentials, relative afferent pupillary defect, and orbital fractures in patients with traumatic optic neuropathy
title_fullStr Predictive value of visual evoked potentials, relative afferent pupillary defect, and orbital fractures in patients with traumatic optic neuropathy
title_full_unstemmed Predictive value of visual evoked potentials, relative afferent pupillary defect, and orbital fractures in patients with traumatic optic neuropathy
title_short Predictive value of visual evoked potentials, relative afferent pupillary defect, and orbital fractures in patients with traumatic optic neuropathy
title_sort predictive value of visual evoked potentials, relative afferent pupillary defect, and orbital fractures in patients with traumatic optic neuropathy
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3151564/
https://www.ncbi.nlm.nih.gov/pubmed/21845028
http://dx.doi.org/10.2147/OPTH.S21409
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