What disability did Leonhard Euler have?

Answer 1

Leonhard Euler - (born April 15, 1707) Leonhard was a pioneering Swiss mathematician and physicist who spent most of his life in Russia and Germany. Euler made important discoveries in fields as diverse as calculus and graph theory. He also introduced much of the modern mathematical terminology and notation, particularly for mathematical analysis, such as the notion of a mathematical function. He is also renowned for his work in mechanics, optics, and astronomy. Euler's left eye became blind from cataract and suffered from eyestrain caused by a strong fever in 1735.

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