Racial differences in optic disc topography: baseline results from the confocal scanning laser ophthalmoscopy ancillary study to the ocular hypertension treatment study.
Zangwill LM, Weinreb RN, Berry CC, Smith AR, Dirkes KA, Coleman AL, Piltz-Seymour JR, Liebmann JM, Cioffi GA, Trick G, Brandt JD, Gordon MO, Kass MA. Racial differences in optic disc topography: baseline results from the confocal scanning laser ophthalmoscopy ancillary study to the ocular hypertension treatment study. Arch Ophthalmol. 2004 Jan; 122(1):22-8.