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Arnall Patz received the US Presidential Medal of Freedom in 2004 for his lifetime of work in what field?

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Arnall Patz received the US Presidential Medal of Freedom in 2004 for his lifetime of work in what field?
posted Sep 9 by Manish Tiwari

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Ophthalmology
In the early 1950s, he discovered that oxygen therapy was the cause of blindness in premature babies, leading to a 60% reduction in childhood blindness in the USA, and in the 1960s he conducted pioneering research into the use of lasers in the treatment of retinal disorders.

answer Sep 10 by Pankaj Deshmukh
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