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radial ker·a·tot·o·my | \ -ˌker-ə-ˈtä-tə-mē 
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\Definition of radial keratotomy
: a surgical operation on the cornea for the correction of myopia that involves flattening it by making a series of incisions in a radial pattern resembling the spokes of a wheel — compare photorefractive keratectomy
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