###Human: Is it advisable to get Lasik surgery done for eye power -6? ###Assistant: Hello. The decision of whether or not you can undergo Lasik or any other refractive surgery depends on three things. Your power should not change for at least a year. That is your power needs to be stable. Your corneal thickness must be adequate for the procedure. Your corneal curvature or shape must be normal. The first criteria are self-explanatory. The next two criteria can be known by a test called corneal topography, which is available at all Lasik centers. If you have satisfied all three, then the surgeon will take you up for surgery.