anterior eye segment morphology trait anterior uvea morphology trait 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. Haller tunica vascula morphology trait Trait.ontology VT:0005194 tunica vasculosa bulbosa morphology trait uveal tract morphology trait vascular layer of the eyeball morphology trait vascular tunic of the eye morphology trait vasculosa oculi morphology trait uvea morphology trait