With the rapid advances in laser technology and surgical techniques, complicationsbecome less frequent. Patients are satisfied with visual outcomes. But a growing number of scholars have found that corneal refractive surgery greatly alters the structure of the corneal and corneal biomechanical properties. Even serious complications such as iatrogenic keratectasia may happen. That remains one of the refractive surgeon's greatest concerns. In this review, we describe the cornea material properties, summarize changes of corneal biomechanical properties after LASIK and review factors that may be related to vatiations in characterization of the biomechanical response of the cornea.