Preferential fiber orientation across glaucoma scleral pair. (A, B) Polar vector maps of preferential collagen fiber orientation across 15-mm diameter posterior-scleral specimens (g1l and g1r) from a pair of glaucoma human eyes, sampled at 0.5-mm intervals, and viewed from the posterior side. The left eye has been mirror-flipped horizontally to enable direct comparison with the right eye. (C, D) Polar vector plots mapped onto 3-D posterior eye models. Note the overall arrangement of fibers is similar to non-glaucoma eyes. (E, F) Regional maps showing average polar plots within the four principal quadrants of the peripapillary sclera and 16 regions of the midposterior tissue.