Contact lens solution toxicity refers to those conditions in the eye that are the result of an unwanted reaction to the use of such solutions. Not only might there be a reaction to the active ingredient in the solution but, many times, it is the vehicle or the preservative in the solution that sets off the reaction. The reaction may be noninfectious, allergic, or both.

      There are many different types of solutions used with contact lenses, and all can cause a toxic reaction. Such solutions include: