We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleOphthalmic and facial veins are not valveless.AuthorsZhang, John; Stringer, Mark D.PublicationClinical & Experimental Ophthalmology, 2010, Vol 38, Issue 5, p502ISSN1442-6404Publication typearticleDOI10.1111/j.1442-9071.2010.02325.x