In-depth

Symptoms

Headache

Most headaches aren't caused by a serious illness, but some could be a sign of a life-threatening condition.

Tests and diagnosis

Eye exam

Eye exam — Overview covers definition, what to expect and results of vision testing.

Treatments and drugs

Contact lens basics

Thinking about trying contact lenses? Here's an overview of the basic choices — plus tips to keep you seeing clearly.

LASIK eye surgery

LASIK eye surgery — Overview covers definition, risks, what to expect from vision correction surgery.

Sep. 30, 2011

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