Myoclonus is the sudden, involuntary twitching or quivering of a muscle or group ... result in blurred vision, pain, and a sudden loss of vision — typically in one eye. Optic neuritis rarely ...

An estimated 104 million Americans of working age spend more than seven hours a day in front of screens, according to the American Optometric Association. All that screen time can take a toll.

Quick quiz. Where are the fastest and most active muscles in the human body? I'll give you a hint. No, it's not your pointer finger. It's your eyes. And I'll show you how fast and active they are ...

SORE MUSCLES ARE often worn with a badge of honor. Struggle moving for a few days, though, and that accolade gets old, fast. "The significant muscle soreness that typically occurs 24 to 48 hours ...

Musculoskeletal pain is one of the most common types of pain. You feel it in your muscles, ligaments, tendons, and bones. The pain can be acute or chronic, ranging from a sharp jab to a dull ...