ABSTRACT
The need for enhancement following LASIK has been reported to be between 11.3 percent and 59 percent.1,2 Hyperopic and astigmatic corrections carry a higher likelihood that an enhancement will be required to achieve the best possible uncorrected visual acuity
There are a variety of factors that may result in the variable responses to the excimer laser including tissue and healing response, ambient humidity and surgical techniques.3 In the majority of cases the retreatment for residual refractive errors following LASIK involves the straightforward approach of lifting the existing flap to expose the stromal bed for additional excimer laser ablation.4
