Second Most Common Complications Of LASIK - Undercorrection & Overcorrection

Undercorrection and Overcorrection are the second most common complications of LASIK Eye Surgery. It means there is residual refractive error impairing vision. Normal, these problems are temporary and resolve themselves in a matter of months. Occasionally, they are permanent.

Second Most Common Complications & Risks Of LASIK - Undercorrection & Overcorrection


  • Most Common Reason : Everyone's corneas can vary greatly from patient to patient, in terms of water content, healing ability, and other variables that are beyond the control of the surgeon. So it is difficult to predict who will develop an undercorrection or overcorrection.
  • Another reason is related to an inaccurate diagnosis or incorrect settings programmed into software guiding the laser during eye surgery.


Sometimes an initial Overcorrection or Undercorrection may occur and usually corrects itself in the first month.

If you have a significant undercorrection or overcorrection, A repeat laser surgery can usually be performed in an attempt to improve the uncorrected vision, and it is often successful. This usually takes place between six to twelve months after the initial surgery, after the vision has stabilized. However, if your corneas are either too steep or too thin, you may not be able to undergo an enhancement procedure. It also can be solved with glasses or contacts glasses.