Syncope (fainting) has many causes. Sometimes it's not serious. In other cases, it's a sign of a heart problem. Read on to learn more.

If your blood pressure drops too low, your brain may not get enough oxygen-rich blood. Your body responds by losing consciousness briefly. You also slump or fall down. This problem is called syncope, fainting, or a blackout.

To be comfortable, your eyes need to be lubricated, or bathed, with tears. But if your eyes don't make enough tears, the surface gets irritated. This is known as dry eyes.

Most eye infections are caused by viruses or bacteria. Many can spread from person to person. Learn about the symptoms of viral and bacterial eye infections, and also how to treat them.

Learn how to care for yourself at home after you have minimally invasive heart surgery. Contact your health care provider if you have questions.

A helpful, step-by-step guide to putting in eye drops safely.

Eye problems can happen at any age. Here are some signs, behaviors, and comments that might mean your child is having vision problems.

Your child is nearsighted if far away objects look blurry. Your child is farsighted if close-up objects look blurry. Other common eye problems: wandering eye, injuries, and infections.

YAG capsulotomy is a quick, painless outpatient procedure. Here's what you can expect.

Find out how a YAG laser uses fast, tiny bursts of energy to improve your vision during a capsulotomy.