Custom Lasik surgery also known as wavefront Lasik is considered an improved form of the traditional lasik surgery. This kind of operations improves not only how much you can see - visual acuity measured by the standard 20/20 eye chart- which can be treated by traditional lasik surgery, but also how well you can see. Thus, it reduces the risk of post-Lasik complications such as glare, shadows, and halos. It also involves a reduced chance of losing best-corrected vision and maximizes your chance to achieve 20/20 vision or better. Custom lasik surgery is usually much more expensive than the conventional lasik procedure. Neither of them will cure all vision-related problems.