Eye care
Learning Center
Choosing sunglasses: Is UV protection important?
When it comes to sunglasses, UV protection matters. Here's why.
Eye injury: Tips to protect vision
An eye injury can happen in the yard, kitchen or even at the playground. Understand how to avoid injuries and when to seek medical help.
Dental braces
Wire-based appliances or clear aligners that orthodontists use to correct crowded and crooked teeth or a misaligned jaw (an overbite or an underbite).
Urine cytology
A urine cytology test uses a sample of your urine to look for abnormal cells, which could indicate a urinary tract cancer.
Reactive airway disease: Is it asthma?
Reactive airway disease is a general term that doesn't indicate a specific diagnosis.
Pap smear: Still needed after hysterectomy?
If you've had surgery to remove your uterus, you might not need routine Pap smears. Find out what doctors recommend for cervical cancer screening.
Mayo Clinic Minute: What you need to know about polyps in your colon
Got polyps? Find out why detecting, and removing, colon polyps is so important.
Positron emission tomography scan
Learn how this imaging scan can play an important role in early detection of health problems, such as cancer, heart disease and brain disorders.
CT coronary angiogram
Learn about the risks and results of this imaging test that looks at the arteries that supply blood to your heart.
Bilirubin test
Find out what to expect from a bilirubin test — an important blood test that determines how your liver is functioning.
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