OA Corner: PPLs demystified

**With all the different progressive power lens (PPL) options available nowadays, it can be confusing when a patient enquires about them.** A patient might tell you that they tried varifocals many years ago and couldn’t get on with them, or that their next door neighbour said they couldn’t get on with them and so they are reluctant to try them. The fact is, PPL designs have improved dramatically over the years, and there are only a handful of patients who are unable to tolerate them. However, careful patient selection together with accurate measurements are paramount in ensuring non tolerance cases are kept to a minimum. In this last OA Corner of the year, we look at some of the relevant advantages and disadvantages of PPLs.