الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 156 |  |  |
| | | from | 156 | | |
Abstract
The importance of this object thesis refractive procedure become most popular nowadays as an ophthalmic surgery despite this procedures are very accurate but sometimes residual errors after LASIK and PRK hence the importance of retreatment for the patients satisfaction and visual acuity to get rid of the glasses. Retreatment should be discussed and investigated. Many studies were searched in this subject. This study was conducted on 36 patients (64 eyes) who underwent LASIK or PRK with residual errors of refraction after primary treatment. 15 patients (25 eyes) underwent wavefront optimized profile while 21 patients (39 eyes) underwent topography guided customized ablation profile. The age of the studied group ranged from 20 to 45 years with mean±SD of 30.78±7.79 years. The studied group included 21 (58.3%) females and 15 (41.7%) males.Although both topography-guided LASIK and wavefront-optimized LASIK safely and effectively achieved the predicted refractive and visual outcomes, topography-guided LASIK induced fewer HOAs and significantly decreased ocular trefoil, corneal total HOAs, and coma.