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How a cataract looks In a normal eye, the lens—which lies behind the pupil—is clear (transparent), so the pupil appears black. In

Normal knee joint Inside a normal knee joint, thick cushioning (cartilage) covers and protects the ends of your bones. This is

An insulin pump is a small computerized device that delivers insulin into the body. This is different from injecting insulin

To use eyedrops, tilt your head back, and pull the lower eyelid down with one or two fingers to create a pouch. Gently squeeze the

A shave skin biopsy is done to remove a growth from the skin. The doctor uses a local anesthetic to numb the area. Then the growth

Courtesy of Drew Taylor, Director of Advanced Open Imaging, Meridian, Idaho. Magnetic resonance imaging (MRI) is a test that uses

Mitral valve prolapse is a condition that affects the mitral valve of the heart. The mitral valve is between the left upper

Retainers are removable devices you wear in your mouth to hold teeth in place after your braces are taken off. Retainers are made

Know which type of insulin pen you're using. Insulin pens are either reusable or disposable. For a reusable pen, you put the

A medical alert bracelet is worn around the wrist. It has information about your identity and your medical condition. This can