Not long ago, news came out that researchers would be exhuming the remains of Galileo Galilei and a woman buried with him to see if she was his daughter. Now it seems that Galileo's DNA will be probed for another purpose: this time to try to determine the cause of his visual impairment. "Based on his own accounts, it has been speculated that the great Tuscan physicist suffered from uveitis, or inflammation of the middle layer of the eye," the article says.