A nurse or other trained health care professional will apply this medicine before your medical procedure.
The patch is applied to your skin about 20 to 30 minutes before your procedure. Tell your doctor if you still have feeling in the skin after 30 minutes have passed.
Be careful not to get any of this medicine in your eyes, because it can cause severe eye irritation. If any of the medicine does get in your eyes, wash the eyes with water and check with your doctor right away.