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(a, b) Distribution and drainage of anterior conjunctival blood; aqueous drainage. Left nasal field (NB, the limbal venous circle more commonly lies anterior to the episcleral arterial circle). eac, episcleral arterial circle; lvc, limbal venous circle (aqueous vein); ecv, episcleral collecting vein (aqueous vein); ca, conjunctival arteriole; cv, conjunctival venule; cap, capillary. (b) (black arrows show striation at venous confluences) (white arrows show aqueous column).
