Alexidine is a disinfectant that traditionally has been used in mouthwash solutions. Its first use in contact lens solutions was in ReNu with MoistureLoc, thus it is a “new” product in this arena. It is believed that Alexidine is the cause or is a partial cause of the problems with this product. The current theory is that ReNu with MoistureLoc does not have sufficient disinfectant efficacy — though it is currently unknown whether it starts out with insufficient efficacy or loses efficacy over time sitting on the shelf — to fight the Fusarium fungus, which is very common.
Tomorrow, Cases of Fusarium keratitis associated with ReNu with MoistureLoc