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How does laser eye surgery work?

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In 1948, Spanish ophthalmologist Jose Ignacio Barraquer Moner was fed up with glasses. He wanted a solution for blurry vision that fixed the eye itself, without relying on external aids. The surgery he eventually devised was called "keratomileusis," and his technique focused on reshaping the cornea— what we now know as LASIK. So how does laser eye surgery actually work? Dan Reinstein explains. [Directed by Hype CG, narrated by Addison Anderson].