The cornea is the clear front part of the eye that transmits light.

VOA: special.2009.03.30

(Speaking) With LASIK,doctors use a laser to permanently change the shape of the cornea to improve vision.

VOA: standard.2010.03.03

The reshaped cornea corrects the patient's bad eyesight so he or she does not have to wear glasses or other corrective lenses.

VOA: special.2010.09.01