Primary open-angle glaucoma (POAG) is a leading cause of irreversible vision loss, yet much of the genetic risk remains unaccounted for, especially in African-Americans, who have a higher risk for developing POAG. This proposal aims to bring together the largest African-descent glaucoma datasets in the world to identify novel POAG loci that may be specific to people of African descent through both genome-wide association studies and admixture mapping. We will also develop and test ancestry-specific polygenic risk scores in African-descent populations.