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The Cornea is Not a Piece of Plastic (Articolo in inglese)

The future of laser refractive surgery is exciting with the potential for ever-improved postoperative visual performance. In the past, the operative goal has been 20/20 uncorrected visual acuity with zero residual refractive error. Criteria for a successful procedure are no longer 20/40 or better with ±1.00 diopter (D) of residual refractive error, because neither surgeons nor patients are satisfied with such gross measurements of visual performance.