That's still double the height of Angel Falls — the tallest waterfall on land — even if the Denmark Strait cataract doesn't look as dramatic as the landmark in Venezuela. Related: Blood Falls ...

Cataracts are a leading cause of vision impairment, but the good news is that they are treatable. Craig Chaya, MD, explains how cataracts affect vision, what factors contribute to their formation, and ...

Which part of the eye does cataract affect? There are three predominant forms of cataract depending on their anatomical location in the eye lens: cortical, nuclear and posterior sub-capsular (PSC). As ...