To Evaluate The Influence Of Age Factor On Corneal Thickness Transformation And Refractive Retirement Ratio After Laser In Situ Keratomileusis Among Moderate Myopic Patients

Objective:To evaluate the influence of age factor on Corneal thickness transformation and Refractive retirement ratio after Laser in Situ Keratomileusis.Method:110cases(220eyes) relating to this hospital ophthalmology for treatment have been collected during the period of two years(01/2010-01/2012). All the patients involved in these cases were divided into3groups in terms of age range, that is, the youngest group from18years to25years(40cases included); the young and middle-aged group from26years to35years(40cases included); the middle-aged group from36years to45years(30cases included). The corneal hyperplasia and refractive retirement ratio were detected in1month,3months and6months respectively after LASIK. Comparatively, the corneal topography transformation was detected in1months,3months and6months after LASIK.Result:After considerate comparison of data collected in every check point after LASIK, it can be seen that there are significant differences of corneal hyperplasia and refractive retirement ratio among3groups(the middle-aged group<the youngest group, the young and middle-aged group<the youngest group, p<0.05). Furthermore, prominent differences of corneal topography transformation among3groups testify that this transformative ability is getting weak with increasing age (the middle-aged group<the young and middle-aged group<the youngest group, p<0.05). Similarly, by comparing the changes of corneal topography among three groups of patents, we can find that the irregular corneal surface seems to have tended to improve gradually after LASIK, but the possibility to recovery would be weakened with age.Conclusion:Under the analogous conditions, the corneal hyperplasia and regression after LASIK are likely to arise in younger patients, and the ability of transferring asymmetric corneal topography to equality corneal topography seems to be weakened with the age increasing.