To the Editor We write to explain errors that occurred in our Original Investigation “Association of Statin Use and High Serum Cholesterol Levels With Risk of Primary Open-Angle Glaucoma,”1 published online on May 2, 2019, and in the July 2019 issue of JAMA Ophthalmology. In the original article, we reported that statin use of 5 or more years was associated with a lower risk of primary open-angle glaucoma (POAG) and that every 20-mg/dL increase in total serum cholesterol was associated with an increased risk of POAG. However, because of errors in our analyses, these findings are not accurate.