A new study suggests that never-seen-before stem cells in the human retina can restore vision in mice with a common eye disorder. But more work is needed to translate the treatment to people. When you ...

Tears seem simple, but the tiny glands that produce them are among the least understood organs in the human body. By growing miniature human tear glands in the lab and coaxing them to “cry,” ...

Dry eye disease affects millions of people, causing burning, redness, and constant eye fatigue that can worsen over time. Scientists now believe the problem may begin deep inside tear glands, where a ...