The effect of simultaneous dual‐focus integration on the global flash multifocal electroretinogram in the human eye

2020 ◽  
Vol 41 (1) ◽  
pp. 171-178
Author(s):  
Mavis M Y Fung ◽  
Kai Yip Choi ◽  
Henry H L Chan
Keyword(s):  
Multifocal Electroretinogram ◽  
Human Eye ◽  
Global Flash

scholarly journals Glaucoma Detection Is Facilitated by Luminance Modulation of the Global Flash Multifocal Electroretinogram

2006 ◽  
Vol 47 (3) ◽  
pp. 929 ◽  
Author(s):  
Patrick H. W. Chu ◽  
Henry H. L. Chan ◽  
Brian Brown
Keyword(s):  
Multifocal Electroretinogram ◽  
Glaucoma Detection ◽  
Global Flash

Forward and backward adaptive effects in global flash multifocal electroretinogram stimulation

2011 ◽  
Vol 94 (3) ◽  
pp. 259-267 ◽  
Author(s):  
Patrick HW Chu ◽  
Yiu-Fai Ng ◽  
Henry HL Chan
Keyword(s):  
Multifocal Electroretinogram ◽  
Global Flash

scholarly journals The Cellular Origins of Chick Global Flash Multifocal Electroretinogram

i-Perception ◽  
10.1068/ic304 ◽  
2011 ◽  
Vol 2 (4) ◽  
pp. 304-304
Author(s):  
Patrick W. K. Ting ◽  
Patrick H. W. Chu ◽  
Yf Ng ◽  
Henry H. L. Chan
Keyword(s):  
Multifocal Electroretinogram ◽  
Global Flash

scholarly journals Porcine global flash multifocal electroretinogram: Possible mechanisms for the glaucomatous changes in contrast response function

2008 ◽  
Vol 48 (16) ◽  
pp. 1726-1734 ◽  
Author(s):  
Patrick H.W. Chu ◽  
Henry H.L. Chan ◽  
Yiu-fai Ng ◽  
Brian Brown ◽  
Andrew W. Siu ◽  
...  
Keyword(s):  
Response Function ◽  
Multifocal Electroretinogram ◽  
Global Flash ◽  
Contrast Response Function ◽  
Contrast Response

scholarly journals Local Relationship between Global-Flash Multifocal Electroretinogram Optic Nerve Head Components and Visual Field Defects in Patients with Glaucoma

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Chan Hee Moon ◽  
Jungwoo Han ◽  
Young-Hoon Ohn ◽  
Tae Kwann Park
Keyword(s):  
Optic Nerve ◽  
Visual Field ◽  
Optic Nerve Head ◽  
Visual Field Defect ◽  
Multifocal Electroretinogram ◽  
Visual Field Defects ◽  
Global Flash ◽  
Field Defect ◽  
Normal Controls ◽  
Field Defects

Purpose. To investigate the local relationship between quantified global-flash multifocal electroretinogram (mfERG) optic nerve head component (ONHC) and visual field defects in patients with glaucoma.Methods. Thirty-nine patients with glaucoma and 30 normal controls were enrolled. The ONHC amplitude was measured from the baseline to the peak of the second positive deflection of the induced component. The ONHC amplitude was normalized by dividing ONHC amplitude by the average of seven largest ONHC amplitudes. The ONHC amplitude ratio map and ONHC deficiency map were constructed. The local relationship between the ONHC measurements and visual field defects was evaluated by calculating the overlap between the ONHC deficiency maps and visual field defect plots.Results.The mean ONHC amplitude measurements of patients with glaucoma (6.01±1.91 nV/deg2) were significantly lower than those of the normal controls (10.29±0.94 nV/deg2) (P<0.001). The average overlap between the ONHC deficiency map and visual field defect plot was 71.4%. The highest overlap (75.0%) was between the ONHC ratios less than 0.5 and the total deviations less than 5%.Conclusions.The ONHC amplitude was reduced in patients with glaucoma compared to that in normal controls. Loss of the ONHC amplitude from the global-flash mfERG showed a high local agreement with visual field defects in patients with glaucoma.

Impact of a Digital Power Line Filter in the 2-Global-Flash Multifocal Electroretinogram of Glaucoma Patients Compared to Controls

2015 ◽  
Vol 41 (1) ◽  
pp. 70-78
Author(s):  
Anna A. Ledolter ◽  
Margarita G. Todorova ◽  
Andreas Schoetzau ◽  
Anja M. Palmowski-Wolfe
Keyword(s):  
Multifocal Electroretinogram ◽  
Power Line ◽  
Global Flash

scholarly journals Human Electroretinal Responses to Grating Patterns and Defocus Changes by Global Flash Multifocal Electroretinogram

PLoS ONE ◽  
2015 ◽  
Vol 10 (4) ◽  
pp. e0123480 ◽  
Author(s):  
Man Pan Chin ◽  
Patrick H. W. Chu ◽  
Allen M. Y. Cheong ◽  
Henry H. L. Chan
Keyword(s):  
Multifocal Electroretinogram ◽  
Global Flash

Early local functional changes in the human diabetic retina: a global flash multifocal electroretinogram study

2012 ◽  
Vol 250 (12) ◽  
pp. 1745-1754 ◽  
Author(s):  
Jenny C. Y. Lung ◽  
Peter G. Swann ◽  
Henry H. L. Chan
Keyword(s):  
Multifocal Electroretinogram ◽  
Functional Changes ◽  
Diabetic Retina ◽  
Global Flash ◽  
Local Functional

scholarly journals Retinal adaptation responses revealed by global flash multifocal electroretinogram are dependent on the degree of myopic refractive error

2006 ◽  
Vol 46 (20) ◽  
pp. 3413-3421 ◽  
Author(s):  
Jennifer C. Chen ◽  
Brian Brown ◽  
Katrina L. Schmid
Keyword(s):  
Refractive Error ◽  
Multifocal Electroretinogram ◽  
Global Flash ◽  
Retinal Adaptation
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