Goseki T, et al. - In adults presenting to single institution since the description of sagging eye syndrome (SES), researchers conducted this retrospective observational case series to examine the causes of acquired binocular diplopia. Between January 2015 and December 2018, records of all new patients over age 40 years who presented to the Stein Eye Institute with binocular diplopia were reviewed. Participants in the study were 945 patients (mean age was 66.5 years). Investigators found that diplopia was most commonly caused by SES. They observed that the relative proportion of patients with SES among all diplopic patients increased with age from about 4.7% under age 50 years, to about 60.9% over age 90 years. In all cases, surgery resolved diplopia. Overall, the concluded that recognizing that SES is a very common cause of adult binocular diplopia is important.