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- persistent anterior hyperplastic primary v. a unilateral congenital abnormality occurring in full-term infants; characterized by a retrolental fibrovascular membrane formed by persistent primary v. with remnants of the hyaloid artery and tunica vasculosa lentis; associated with leukokoria, microphthalmos, shallow anterior chamber, and elongated ciliary processes.
- persistent posterior hyperplastic primary v. a unilateral congenital anomaly in full-term infants; associated with a congenital retinal fold and a v. membranous stalk containing remnants of the hyaloid artery.
- primary v. the v. first formed in the embryo between the optic cup and the lens vesicle, and later vascularized by the hyaloid artery and its branches.
- tertiary v. v. fibrils derived from the neuroepithelium of the ciliary body and forming the ciliary zonule.
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vit·re·ous 'vi-trē-əs adj of, relating to, constituting, or affecting the vitreous body <\vitreous hemorrhages>
vitreous n VITREOUS BODY
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vit·re·ous (vitґre-əs) 1. glasslike or hyaline. 2. vitreous body (corpus vitreum [TA]).Medical dictionary. 2011.