#8: LASIK

The Definition:

LASIK : a surgical operation to reshape the cornea for correction of myopia, farsightedness, or astigmatism in which the surface layer of the cornea is separated to create a hinged flap providing access to the inner cornea where varying amounts of tissue are removed by an excimer laser

Editor's Note:

"This definition provides a great amount of information about a relatively complicated procedure, while still remaining easy to understand. Upon consulting this entry, a reader will know not only what the LASIK procedure is used for but also how it is done."