Troxler Effect

Occurs when an object appears to fade from a patient’s vision. This occurs when the retina is presented with the same stimuli for a prolonged period of time. The photoreceptors need a visual variance in order to be stimulated. When they are not presented with a visual variance, they are no longer being stimulated, and so the object appears to fade from their vision. Microsaccades are used to counter the Troxler Effect. They keep the eye moving, and this movement provides visual variance.