In-depth

Tests and diagnosis

Genetic testing

Genetic testing is used to detect altered genes that may cause illness or disease. Although genetic testing can offer important health information, it has limitations.

X-ray

Treatments and drugs

Cataract surgery

Cataract surgery successfully restores vision in an overwhelming majority of cases. Find out what cataract surgery involves, including what to expect afterward and rare complications.

Hip replacement

Knee replacement

Jan. 28, 2014