Comparison of visual function in pigmented and albino rats by electroretinography and visual evoked potentials

2008 ◽  
Vol 246 (11) ◽  
pp. 1559-1573 ◽  
Author(s):  
Peter Heiduschka ◽  
Ulrich Schraermeyer
Keyword(s):  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Visual Function ◽  
Albino Rats ◽  
Visual Evoked

scholarly journals Visual evoked potentials in veterinary ophthalmology: literature review

2019 ◽  
Vol 2019 (5) ◽  
pp. 23-29
Author(s):  
Артем Миронович ◽  
Artem Mironovich ◽  
Сергей Бояринов ◽  
Sergey Boyarinov
Keyword(s):  
Nervous System ◽  
Literature Review ◽  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Visual Function ◽  
Research Method ◽  
Structural Changes ◽  
Complete Loss ◽  
Diagnostic Research ◽  
Visual Evoked

Diagnosis of causes of blindness in veterinary ophthalmology is an urgent issue. There are a large number of diseases of central and peripheral nervous system, which can lead to partial or complete loss of visual function in animals. Visual evoked potentials (VEP) of brain can be a reliable diagnostic research method to clarify the location of the disfunction and causes of blindness in dogs and cats. Together, the visual evoked potentials and electroretinography complement each other and give a greater idea of electrophysiology of visual process. In this article on the basis of large quantity of information we examine the ways of applying this method and the problems, connected with its use. It is important to understand that the VEP can reveal the functional disturbances of visual way, but does not give the information about the structural changes.

scholarly journals Intraoperative monitoring of visual evoked potentials in patients undergoing transsphenoidal surgery for pituitary adenoma: a systematic review

BMC Neurology ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Farizeh Jashek-Ahmed ◽  
Ivan Cabrilo ◽  
Jarnail Bal ◽  
Brett Sanders ◽  
Joan Grieve ◽  
...  
Keyword(s):  
Pituitary Adenoma ◽  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Visual Function ◽  
Transsphenoidal Surgery ◽  
Intraoperative Monitoring ◽  
Case Series ◽  
Warning Sign ◽  
Published Evidence ◽  
Visual Evoked

Abstract Background Transsphenoidal surgery is the gold standard for pituitary adenoma resection. Although rare, a serious complication of surgery is worsened vision post-operatively. Objective To determine whether, in patients undergoing transsphenoidal surgery for pituitary adenoma, intraoperative monitoring of visual evoked potentials (VEP) is a safe, reproducible, and effective technological adjunct in predicting postoperative visual function. Methods The PubMed and OVID platforms were searched between January 1993 and December 2020 to identify publications that (1) featured patients undergoing transsphenoidal surgery for pituitary adenoma, (2) used intraoperative optic nerve monitoring with VEP and (3) reported on safety or effectiveness. Reference lists were cross-checked and expert opinion sought to identify further publications. Results Eleven studies were included comprising ten case series and one prospective cohort study. All employed techniques to improve reliability. No safety issues were reported. The only comparative study included described a statistically significant improvement in post-operative visual field testing when VEP monitoring was used. The remaining case-series varied in conclusion. In nine studies, surgical manipulation was halted in the event of a VEP amplitude decrease suggesting a widespread consensus that this is a warning sign of injury to the anterior optic apparatus. Conclusions Despite limited and low-quality published evidence regarding intra-operative VEP monitoring, our review suggests that it is a safe, reproducible, and increasingly effective technique of predicting postoperative visual deficits. Further studies specific to transsphenoidal surgery are required to determine its utility in protecting visual function in the resection of complex pituitary tumours.

Case Report of Multiple Sclerosis in Which Visual Function Was Evaluated Using Multifocal Visual Evoked Potentials

2007 ◽  
Vol 51 (2) ◽  
pp. 153-155 ◽  
Author(s):  
Eiichi Yukawa ◽  
Yeong-Jin Kim ◽  
Tetsuo Ueda ◽  
Yoshiaki Hara
Keyword(s):  
Multiple Sclerosis ◽  
Case Report ◽  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Visual Function ◽  
Multifocal Visual Evoked Potentials ◽  
Visual Evoked

Measuring recovery of visual function in children with papilledema using sweep visual evoked potentials

2016 ◽  
Vol 20 (3) ◽  
pp. 252-257
Author(s):  
Eedy Mezer ◽  
Carol A. Westall ◽  
Giuseppe Mirabella ◽  
Tamara Wygnanski-Jaffe ◽  
Ronit Yagev ◽  
...  
Keyword(s):  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Visual Function ◽  
Visual Evoked

scholarly journals Influence of pupil size and other test variables on visual function assessment using visual evoked potentials in normal subjects

2010 ◽  
Vol 121 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Sarwat Salim ◽  
Kevin Childers ◽  
Alvaro P. C. Lupinacci ◽  
George Z. Hu ◽  
Vance Zemon ◽  
...  
Keyword(s):  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Visual Function ◽  
Pupil Size ◽  
Normal Subjects ◽  
Function Assessment ◽  
Visual Evoked

scholarly journals Intraoperative Monitoring of Visual Evoked Potentials in Patients Undergoing Transsphenoidal Surgery for Pituitary Adenoma: A Systematic Review

2020 ◽  
Author(s):  
Farizeh Ahmed ◽  
Ivan Cabrilo ◽  
Jarnail Bal ◽  
Brett Sanders ◽  
Joan Grieve ◽  
...  
Keyword(s):  
Pituitary Adenoma ◽  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Visual Function ◽  
Transsphenoidal Surgery ◽  
Intraoperative Monitoring ◽  
Case Series ◽  
Warning Sign ◽  
Published Evidence ◽  
Visual Evoked

Abstract BackgroundTranssphenoidal surgery is the gold standard for pituitary adenoma resection. Although rare, a serious complication of surgery is worsened vision post-operatively. ObjectiveTo determine whether, in patients undergoing transsphenoidal surgery for pituitary adenoma, intraoperative monitoring of visual evoked potentials (VEP) is a safe, reproducible and effective technological adjunct in predicting postoperative visual function. MethodsThe MEDLINE database was searched between January 1993 and June 2019 to identify publications that (1) featured patients undergoing transsphenoidal surgery for pituitary adenoma, (2) used intraoperative optic nerve monitoring with VEP and (3) reported on safety or effectiveness. Reference lists were cross-checked and expert opinion sought to identify further publications. ResultsTen studies were included comprising nine case series and one cohort study. All employed techniques to improve reliability. No safety issues were reported. The only comparative study included described a statistically significant improvement in post-operative visual field testing when VEP monitoring was used. The remaining case-series varied in conclusion. In nine studies, surgical manipulation was halted in the event of a VEP amplitude decrease suggesting a widespread consensus that this is a warning sign of injury to the anterior optic apparatus. ConclusionsDespite limited and low-quality published evidence regarding intra-operative VEP monitoring, our review suggests that it is a safe, reproducible and increasingly effective technique of predicting postoperative visual deficits. Further studies specific to transsphenoidal surgery are required to determine its utility in protecting visual function in the resection of complex pituitary tumours, and of other tumours in the anterior skull base.

Application of visual evoked potentials for preoperative estimation of visual function in eyes with dense cataract

2001 ◽  
Vol 239 (12) ◽  
pp. 915-922 ◽  
Author(s):  
Hiroshi Mori ◽  
Keiko Momose ◽  
Nobuyuki Nemoto ◽  
Fumio Okuyama ◽  
Yuichi Kimura ◽  
...  
Keyword(s):  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Visual Function ◽  
Visual Evoked
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