Biomaterial Database

Erosion of implants in retinal detachment surgery. 1983

M O Yoshizumi, and T Friberg

We analyzed erosion of intrascleral implants in 728 eyes that underwent scleral buckling procedures for retinal detachment surgery over the past 25 years. Types of implants included polyethylene tubes, solid silicone implants with and without silicone circling bands, and gelatin implants. The use of solid silicone implants and circling bands rather than polyethylene tubes has greatly reduced, but not eliminated, the problem of erosion. Erosion occurred in 62.3% of eyes with polyethylene tubes and in 3.8% of eyes with solid silicone implants with silicone circling bands. Factors associated with erosion included thin sclera, multiple operations, and glaucoma. Complications resulting from erosion were subretinal and vitreous hemorrhage, retinal detachment, and phthisis bulbi. Erosion is a problem that may appear up to 21 years after the scleral buckling procedure. The great number of retinal detachment repairs performed over the past 25 years make erosion of the intrascleral implant a concern of ophthalmologists today and a continued problem for the future.

UI	MeSH Term	Description	Entries
D011095	Polyethylenes	Synthetic thermoplastics that are tough, flexible, inert, and resistant to chemicals and electrical current. They are often used as biocompatible materials for prostheses and implants.	Ethylene Polymers,Ethene Homopolymers,Homopolymers, Ethene,Polymers, Ethylene
D012164	Retinal Diseases	Diseases involving the RETINA.	Disease, Retinal,Diseases, Retinal,Retinal Disease
D005128	Eye Diseases	Diseases affecting the eye.	Eye Disorders,Eye Disease,Eye Disorder
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001673	Biodegradation, Environmental	Elimination of ENVIRONMENTAL POLLUTANTS; PESTICIDES and other waste using living organisms, usually involving intervention of environmental or sanitation engineers.	Bioremediation,Phytoremediation,Natural Attenuation, Pollution,Environmental Biodegradation,Pollution Natural Attenuation
D012591	Scleral Buckling	An operation for retinal detachment which reduces the size of the globe by indenting the sclera so that it approximates the retina.	Buckling, Scleral,Bucklings, Scleral,Scleral Bucklings
D012828	Silicones	A broad family of synthetic organosiloxane polymers containing a repeating silicon-oxygen backbone with organic side groups attached via carbon-silicon bonds. Depending on their structure, they are classified as liquids, gels, and elastomers. (From Merck Index, 12th ed)	Silicone
D019736	Prostheses and Implants	Artificial substitutes for body parts, and materials inserted into tissue for functional, cosmetic, or therapeutic purposes. Prostheses can be functional, as in the case of artificial arms and legs, or cosmetic, as in the case of an artificial eye. Implants, all surgically inserted or grafted into the body, tend to be used therapeutically. IMPLANTS, EXPERIMENTAL is available for those used experimentally.	Implants, Artificial,Prostheses and Implant,Prosthesis,Prosthetic Implant,Endoprostheses,Endoprosthesis,Prostheses,Prosthetic Implants,Artificial Implant,Artificial Implants,Implant and Prostheses,Implant, Artificial,Implant, Prosthetic,Implants and Prostheses,Implants, Prosthetic