| 释义 |
DictionarySeecupphysiological cup
physiological cupA depression in the center of the optic nerve through which the blood vessels pass; normal cup to disc ratios range from 0.3 to 0.5 of the disk diameter.See also: cupcup, physiological A funnel-shaped depression at or near the centre of the optic disc through which pass the central retinal vessels. Syn. optic cup (although it would be preferable not to use this synonym since this term has another meaning); physiological excavation. See cupped disc; neuroretinal rim.FinancialSeeCUP |