Gracitelli CPB, et al. - Researchers here investigated racial differences in longitudinal visual field variability and their impact on time to detect visual field progression. Compared with glaucoma patients of European descent, those with African descent showed increased visual field variability, resulting in delayed detection of progression. These findings could provide an explanation to higher rates of glaucoma-related visual impairment in individuals of African descent compared with those of European descent with glaucoma.