Steady-state pattern electroretinogram and short-duration transient visual evoked potentials in glaucomatous and healthy eyes.
Amarasekera Dilru C, Resende Arthur F, Waisbourd Michael, Puri Sanjeev, Moster Marlene R, Hark Lisa A, Katz L Jay, Fudemberg Scott J, Mantravadi Anand V
AI Summary
This study found steady-state pattern electroretinogram (ssPERG) effectively distinguished glaucomatous from healthy eyes, showing promise as a clinical diagnostic tool, unlike short-duration visual evoked potentials.
Abstract
Importance
This study evaluates two rapid electrophysiological glaucoma diagnostic tests that may add a functional perspective to glaucoma diagnosis.
Background
This study aimed to determine the ability of two office-based electrophysiological diagnostic tests, steady-state pattern electroretinogram and short-duration transient visual evoked potentials, to discern between glaucomatous and healthy eyes.
Design
This is a cross-sectional study in a hospital setting.
Participants
Forty-one patients with glaucoma and 41 healthy volunteers participated in the study.
Methods
Steady-state pattern electroretinogram and short-duration transient visual evoked potential testing was conducted in glaucomatous and healthy eyes. A 64-bar-size stimulus with both a low-contrast and high-contrast setting was used to compare steady-state pattern electroretinogram parameters in both groups. A low-contrast and high-contrast checkerboard stimulus was used to measure short-duration transient visual evoked potential parameters in both groups.
Main outcome measures
Steady-state pattern electroretinogram parameters compared were MagnitudeD, MagnitudeD/Magnitude ratio, and the signal-to-noise ratio. Short-duration transient visual evoked potential parameters compared were amplitude and latency.
Results
MagnitudeD was significantly lower in glaucoma patients when using a low-contrast (P = 0.001) and high-contrast (P < 0.001) 64-bar-size steady-state pattern electroretinogram stimulus. MagnitudeD/Magnitude ratio and SNR were significantly lower in the glaucoma group when using a high-contrast 64-bar-size stimulus (P < 0.001 and P = 0.010, respectively). Short-duration transient visual evoked potential amplitude and latency were not significantly different between the two groups.
Conclusions and relevance: Steady-state pattern electroretinogram was effectively able to discern between glaucomatous and healthy eyes. Steady-state pattern electroretinogram may thus have a role as a clinically useful electrophysiological diagnostic tool.
MeSH Terms
Shields Classification
Key Concepts6
In a cross-sectional study of 41 glaucoma patients and 41 healthy volunteers, MagnitudeD was significantly lower in glaucoma patients when using a low-contrast (P = 0.001) 64-bar-size steady-state pattern electroretinogram stimulus.
In a cross-sectional study of 41 glaucoma patients and 41 healthy volunteers, MagnitudeD was significantly lower in glaucoma patients when using a high-contrast (P < 0.001) 64-bar-size steady-state pattern electroretinogram stimulus.
In a cross-sectional study of 41 glaucoma patients and 41 healthy volunteers, MagnitudeD/Magnitude ratio was significantly lower in the glaucoma group when using a high-contrast 64-bar-size steady-state pattern electroretinogram stimulus (P < 0.001).
In a cross-sectional study of 41 glaucoma patients and 41 healthy volunteers, the signal-to-noise ratio (SNR) was significantly lower in the glaucoma group when using a high-contrast 64-bar-size steady-state pattern electroretinogram stimulus (P = 0.010).
Steady-state pattern electroretinogram was effectively able to discern between glaucomatous and healthy eyes in a cross-sectional study of 41 glaucoma patients and 41 healthy volunteers.
In a cross-sectional study of 41 glaucoma patients and 41 healthy volunteers, short-duration transient visual evoked potential amplitude and latency were not significantly different between the glaucoma and healthy groups.
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