What is blood pressure?

How to use a dry powder tube inhaler

Watch this video to learn how to use a dry powder tube inhaler.

Photodynamic therapy of the esophagus

Photodynamic therapy video shows light treatment for Barrett's esophagus and esophageal cancer.

Causes of endometriosis

Animation of endometriosis as it develops and causes tissue damage in a woman's reproductive tract.

Cardiomyopathy

This animation shows a catheter being inserted into the heart where alcohol is injected causing the swollen ventricle wall to shrink.

• Heart Disease

Syfovre: Uses, How It Works, and Common Side Effects

Syfovre is used to treat geographic atrophy, an advanced form of macular degeneration, to help preserve vision by slowing vision loss and, therefore, blindness.

• Syfovre