How many real-world patients with proliferative DR were concordant with the treatment directions in Protocol S? Adrienne Scott, MD, explains how a database review of real-world patients with proliferative DR revealed how few patients are concordant with the strict dosing schedule of Protocol S, and shares which baseline factors were linked to lack of concordance. And Dilraj Grewal, MD, provides an update on the relationship between retinal imaging and detection of Alzheimer disease. Just how close are we from using noninvasive retinal imaging techniques to screen for potential neurodegenerative conditions?