The researchers found that a protein called hypoxia-inducible factor (HIF) builds up in retinal cells during episodes of low ...

And if you smoke, quit. 2. Glaucoma. This occurs when fluids that normally flow in and out of the eye drain improperly, increasing the pressure inside the eye and eventually damaging the optic nerve.

Cloudy areas in the lens, called cataracts, are another common eye problem that comes with age. More than 24 million ...