This animation by Visible Productions explains the process by which we see and defines how cataracts affect our vision. The build up of proteins clouds vision, as well as dulls colors and blurs contrast. Learn what occurs during cataract surgery to correct this common ailment.

To view an animation that explains how aging affects our vision, click here.To view an animation that shows what happens during lasik surgery, click here

Sponsored by Abbott Medical Optics - for more information click here. Animation produced by Visible Productions Inc.

You've heard of red wine and white wine but have you ever heard of blue wine? This blue version of wine is given a taste test to see how it compares to the classics.