Here are images that show the steps of using a nebulizer. 

Here are images that show the steps of using a dry-powder twist inhaler.

Here are images that show the steps of using a dry-powder diskus inhaler.

Here are images that show the steps of using an inhaler with a spacer.

An eye twitch is an automatic blinking of your eyelid that you can't control. This abnormal blinking may happen many times a day. If eye twitching is severe, it can cause problems with your eyesight.

Ependymoma is a rare type of tumor of the brain or spinal cord. It can occur in both children and adults. In adults, it is often in the spinal cord. The tumor may not be cancer (benign), or it may be cancer.

A dacryocystorhinostomy is a type of surgery. It’s done to make a new tear duct between your eyes and nose.

A craniectomy is a surgery to remove a piece of your skull. It's done to help relieve pressure in the skull when fluid builds up and presses on the brain.

Surgical thrombectomy is surgery to remove a blood clot from 1 of your blood vessels. The blood clot may be in an artery or vein in your arm, leg, or another part of your body. It may block the flow of blood to your tissues or organs.

Percutaneous transcatheter treatment is a way to treat a deep vein thrombosis (DVT). DVT is a blood clot that forms in a large, deep vein. It happens most often in one of the veins of your legs. You may have pain, swelling, warmth, and redness from the DVT.