A cloudy pool is probably not a pool you want to swim in. What's the most likely cause, though, and how can you fix it? We got some expert advice.

Cataracts can cause blurry vision, sensitivity to lights, and less ability to see vibrant colors, or at night. Learn more about a person's vision with cataracts and after surgery.

Cataracts often look like cloudy, opaque patches in a person's eye. They can also cause blurry vision and other symptoms. Learn more.

Even in the faintest light, harbour seals are able to use their vision and take advantage of cloudy water to determine which direction they are travelling in based on the apparent movement of ...

Space & Spaceflight Why Do Sun-Gazing Spacecraft Get Cloudy Vision? Scientists say they've finally solved a longstanding mystery as to why solar probes unexpectedly degrade over short periods of time.