anterior eye segment morphology trait anterior uvea morphology trait vasculosa oculi morphology trait VT:0005194 tunica vasculosa bulbosa morphology trait Trait.ontology Any measurable or observable characteristic related to the shape, structure, color or pattern of the front, or ventral, portion of the vascular, pigmentary, or middle coat of the eye, including the ciliary body and the iris. vascular layer of the eyeball morphology trait Haller tunica vascula morphology trait uveal tract morphology trait vascular tunic of the eye morphology trait uvea morphology trait