highly significantp -value = 9.2 × 10 −5
controls (148 alleles out of 24,758 = 0.6%) was highly significant [ p -value = 9.2 × 10 −5 , threshold = 0.05/ N , N = 1, by Fisher’s exact test (24,610:148 vs. 648:14)], indicating that this relatively common variant has in fact an effect on retinal health.