The brief presentation ensures that cortical completion is not engaged, and that fixation is maintained during the entire presentation of each stimulus. The presentation of the signal is triggered when the patient is fixating on the center of the screen.
When the stimulus is projected on an unhealthy area of the macula, the patient may perceive two distortions: one corresponding to the artificial wave and the other to the patient’s pathological distortion. Or they may only see one distortion corresponding to the pathological distortion.
