choroid morphology trait Bruch membrane morphology trait Henle membrane morphology trait lamina vitrea morphology trait vitreous lamella morphology trait lamina basalis choroidae morphology trait morphology trait of the basal layer of the choroid morphology trait of the basal lamina of the choroid Bruch's membrane morphology trait Trait.ontology VT:0005239 Any measurable or observable characteristic related to the shape, structure, color or pattern of the transparent, nearly structureless inner layer of the choroid in contact with the pigmented layer of the retina.