망막전위도검사에서 ERG-Jet 단극전극과 Burian-Allen 양극전극의 파형 비교
Comparison of Electroretinogram Waveforms Acquired Using Monopolar ERG-Jet Electrode and Bipolar Burian-Allen Electrode
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목적: ERG-Jet 전극과 Burian-Allen 전극의 망막전위도 측정결과를 비교하고자 하였다. 대상과 방법: 29명을 대상으로 ERG-jet 전극과 Burian-Allen 전극을 이용하여 양안의 망막전위도를 측정하였다. 별도의 6명을 대상으로 두 가지 전극을 이용하여 좌안의 망막전위도를 3회씩 측정하였다. 망막전위의 진폭 및 반응도달시간을 양안 간에, 또한 두 전극간에 비교하였고, 개체 간 변동 및 개체 내 변동을 두 전극 간에 비교하였다. 결과: 망막전위도의 진폭과 반응도달 시간의 양안 차이는 전극의 종류에 유의한 영향을 받지 않는 것으로 나타났으나, ERG-jet 전극과달리 Burian-Allen 전극을 이용하여 얻은 진폭은 양안 간에 차이를 보였다. ERG-jet 전극이 대체적으로 Burian-Allen 전극에 비해진폭이 크고, 반응도달 시간이 짧은 것으로 나타났으며, 개체간 변동 및 개체 내 변동이 적은 것으로 나타났다. 결론: 망막전위도 측정에 있어서 ERG-Jet 전극은 Burian-Allen 전극에 비해 진폭이 크고, 일관성이 있어 우수하다고 할 수 있다.
Abstract
Purpose: To compare electroretinogram (ERG) waveforms acquired using an ERG-jet electrode and a Burian-Allen electrode. Methods: ERGs were recorded with an ERG-jet electrode and a Burian-Allen electrode from both eyes of 29 volunteers. Three consecutive recordings were obtained with both electrodes from the left eye of another 6 volunteers. Peak-to-trough amplitudes and peak implicit times were compared between both eyes, and between the 2 types of electrodes. Interpersonal and intrapersonal variation were also compared. Results: The differences in amplitude and implicit time between the right and left eyes were not influenced by the type of electrode. The amplitude of the ERG acquired using the Burian-Allen electrode, however, showed significant differences between both eyes, contrary to the amplitude acquired using the ERG-jet electrode. ERG recordings obtained using the ERG-jet electrode generally showed higher amplitude, shorter implicit time, and less interpersonal and intrapersonal variation than ERG recordings obtained using the Burian-Allen electrode. Conclusions: In this application, the ERG-jet ERG electrode appeared to be superior to the Burian-Allen electrode in terms of both usefulness and consistency.
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