an operation to correct severe degrees of myopia (short-sightedness). A disc of corneal tissue (from the *stroma of the cornea) is removed, frozen, and remodelled on a lathe, then replaced into the cornea to alter its curvature and thus reduce the myopia. *Excimer laser treatment, which is easier to perform, has now replaced this (see LASIK).... intrastromal keratomileusis
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