Mimouni M, Kronschläger M, Ruiss M, et al. - Researchers conducted this retrospective study to evaluate outcomes of intraoperative optical coherence tomography (iOCT) guided meticulous peripheral corneal sweeping for removal of interface fluid during ultra-thin (UT) DSAEK. From October 2016 to February 2018, all eyes underwent iOCT guided UT-DSAEK at the Hanusch Hospital, Vienna, Austria. Overall, 28 eyes of 28 patients with a mean age of 73.9 ± 10.0 years were involved. In nearly 90% of UT-DSAEK cases, the iOCT identified subclinical remnant fluid. In the majority of cases, iOCT-guided peripheral corneal sweeping resulted in the resolution of interface fluid. Rebubbling is more likely in eyes that have persistent remnant fluid despite peripheral corneal sweeping.