During a LASIK surgery, an excimer laser is used to reshape the cornea to correct for refractive errors. As a result, one’s cornea becomes thinner after LASIK. For those with sufficient corneal thickness, this is not a problem. However, for this reason, people with thin corneas may not be ideal candidates for LASIK. By adding LASIk Xtra to the treatment procedure, people with corneas that were previously classified as ‘too thin’ may be able to undergo LASIK.