Biomaterial Database

The lens and pars plana vitrectomy for diabetic retinopathy complications. 1979

G Blankenship, and R Cortez, and R Machemer

Major cataracts developed in 28 of 168 eyes during the six months after pars plana vitrectomy for complications of diabetic retinopathy. In only ten of these cases did the cataract influence the visual results. The visual acuities of the phakic and aphakic eyes six months after vitrectomy were almost identical. Rubeosis iridis occurred in 23% of the phakic eyes and 45% of the aphakic eyes, with the difference being related to the loss in the aphakic eyes of a protective barrier lens quality. However, this same barrier quality increased the incidence of postoperative opaque vitreous hemorrhage from 8% of the aphakic eyes to 21% of the phakic eyes. Corneal epithelial edema at surgery occurred in 55% of those eyes that had lens removal combined with vitrectomy, but in only 36% of those that retained their lenses, and the difference was caused by the increase in operative time and procedure.

UI	MeSH Term	Description	Entries
D007498	Iris	The most anterior portion of the uveal layer, separating the anterior chamber from the posterior. It consists of two layers - the stroma and the pigmented epithelium. Color of the iris depends on the amount of melanin in the stroma on reflection from the pigmented epithelium.
D007908	Lens, Crystalline	A transparent, biconvex structure of the EYE, enclosed in a capsule and situated behind the IRIS and in front of the vitreous humor (VITREOUS BODY). It is slightly overlapped at its margin by the ciliary processes. Adaptation by the CILIARY BODY is crucial for OCULAR ACCOMMODATION.	Eye Lens,Lens, Eye,Crystalline Lens
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D011183	Postoperative Complications	Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.	Complication, Postoperative,Complications, Postoperative,Postoperative Complication
D002386	Cataract	Partial or complete opacity on or in the lens or capsule of one or both eyes, impairing vision or causing blindness. The many kinds of cataract are classified by their morphology (size, shape, location) or etiology (cause and time of occurrence). (Dorland, 27th ed)	Cataract, Membranous,Lens Opacities,Pseudoaphakia,Cataracts,Cataracts, Membranous,Lens Opacity,Membranous Cataract,Membranous Cataracts,Opacities, Lens,Opacity, Lens,Pseudoaphakias
D003930	Diabetic Retinopathy	Disease of the RETINA as a complication of DIABETES MELLITUS. It is characterized by the progressive microvascular complications, such as ANEURYSM, interretinal EDEMA, and intraocular PATHOLOGIC NEOVASCULARIZATION.	Diabetic Retinopathies,Retinopathies, Diabetic,Retinopathy, Diabetic
D005260	Female		Females
D005500	Follow-Up Studies	Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.	Followup Studies,Follow Up Studies,Follow-Up Study,Followup Study,Studies, Follow-Up,Studies, Followup,Study, Follow-Up,Study, Followup
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man