Anatomy of Nicotine Addiction

Cryotherapy of the esophagus

Cryotherapy video shows use of extreme cold treatment for Barrett's esophagus and esophageal cancer.

Keratoconus

Scleral contact lenses may be an alternative to surgery for many patients with keratoconus.

Vyvanse: An Overview of Attention Deficit Hyperactivity Disorder (ADHD) and Stimulants

A brief review of the symptoms of ADHD and stimulant options for treatment.

• Vyvanse

Vasectomy Proceedure

This animation shows a vasectomy procedure. A vasectomy is a procedure to cause permanently sterility in a man by preventing the transport of sperm out of the testes. A small incision is made in the scrotum and each vas deferens is tied off and cut apart preventing sperm from being released within the ejaculate. The small skin incision is stitched closed and the surgery does not affect a man's sexual function.

• Men's Health

Core side exercises with fitness ball

You can do many core exercises with a fitness ball. See a side exercise.