Corneas are like fingerprints, just as unique and intricate. They have lumps, bumps, ridges and grooves. These shapes create distortions that can't be treated with glasses or contacts. Even some standard LASIK treatments can only correct so much. That's why Custom Laser Center employs a device called a Wavefront Analyzer, which sends multiple parallel beams of light into the eye. These beams get distorted as they bounce through the cornea, off the retina, and back again. These distortions are registered by the analyzer and used to direct the laser specifically to those areas causing them. These distortions are then targeted and corrected, frequently resulting in better than 20/20 vision.