Fig. 15. Peripapillary sclera nasal to optic nerve (N). Cluster of short posterior ciliary arteries (SPCAs) (white triangle) is nasal to disc in this specimen. Other SPCAs form a ring around the nerve. Short posterior ciliary nerves (arrows) form a wreath approximately 2 mm from the nerve. Emissary canal (thin, double arrow) for long posterior ciliary nerve (below) and artery. Cross-section at level of lamina cribrosa. (H & E, × 31)