1 Visual stimulation is carried by the optic nerve to the brain.
With the patch on, the brain will only receive information from the lazy eye, and hence, will not ignore it.
Normally, the eyes work together so that they focus in the same direction at the same time.
In severe cases, lazy eye can also lead to loss of vision.
It causes the correction of developmental errors.
Abnormal results of vision screening tests Sometimes lazy eye is not evident without an eye exam.