Diabetic Macular Edema

Background: Many causes of vision impairment can be prevented or treated. With an ageing global population, the demands for eye health services are increasing. We estimated the prevalence and relative contribution of avoidable causes of blindness and vision impairment globally from 1990 to 2020. We aimed to compare the results with the World Health Assembly Global Action Plan (WHA GAP) target of a 25% global reduction from 2010 to 2019 in avoidable vision impairment, defined as cataract and undercorrected refractive error.
Purpose: To evaluate the efficacy and safety of intravitreal ranibizumab in diabetic macular edema (DME) patients. Design: Two parallel, methodologically identical, phase III, multicenter, double-masked, sham injectioncontrolled, randomized studies. Participants: Adults with vision loss from DME (best-corrected visual acuity [BCVA], 20/4020/320 Snellen equivalent) and central subfield thickness ≥275 μm on time-domain optical coherence tomography (OCT). Intervention: Monthly intravitreal ranibizumab (0.5 or 0.3 mg) or sham injections. Macular laser was available per-protocolspecified criteria.