Relative positions of copy number variations detected in Australian cases (AG604, AG624, AG724, and GFMC524) with normal-tension glaucoma in the current report and copy number variations in pedigrees GGO-441, GGA-458, GGJ-414, and GGR-590, which were previously reported.16-18 The extent of each copy number variation in base pairs is in parentheses (hg19 build) and is also depicted by black boxes; the genes encompassed by duplications are depicted as gray boxes.