Figure 2  .

Switches made in topical β blocker therapy because of an ocular side effect (n=34). Preservative free denotes all patients altering their preservative-free β blocker medication because of an ocular side effect. In this latter group, four patients used preservative-free timolol and one patient used preservative-free metipranolol. Whether the patient was prescribed a different β blocker, a preservative-free β blocker, a different topical antiglaucoma drug, or stopped topical antiglaucoma therapy is also shown.