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OTRC: Anderson Cooper went temporarily blind during reporting assignment (Photo)

Anderson Cooper appears in a photo he Tweeted on December 4, 2012. / Anderson Cooper appears in an June 22 episode of 'Jimmy Kimmel Live.' (Twitter.com/andersoncooper / ABC/RANDY HOLMES)

Anderson Cooper opened up on his talk show "Anderson Live" about how a recent reporting assignment caused him to become temporarily blind.

Cooper explained on Tuesday, December 4, that he was in Portugal the previous week working on a story for "60 Minutes" and spent two hours on the water.

"I wake up in the middle of the night and it feels like my eyes are on fire, my eyeballs," Cooper said during his talk show, which can be viewed below. "And I think, 'Oh well maybe I have sand in my eyes or something.' I douse my eyes with water. Anyway it turns out I have sun burned my eyeballs and I go blind."

Cooper said he lost sight for 36 hours and Tweeted a picture after going to the hospital with a patch on one of his eyes. The photo can be seen above. Cooper said he wanted to warn viewers about the risk and invited Dr. Nancy Snyderman, chief medical correspondent for NBC News, to explain what happened to Cooper's eyes.

Dr. Snyderman explained that Cooper burned his retina but was going to be fine. Snyderman added that "everybody needs sunglasses," adding that protection from the sun can prevent cataracts later in life.

Check out the clip from "Anderson Live" below.

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