Enucleation with implantation of a proplast sphere.

Proplast, an inert carbon-Teflon alloplastic material, was tested as a primary spherical implant after unilateral enucleation in albino rabbits. The implants were removed at 3 months in three rabbits and at 6 months in the remaining three rabbits. Clinical observation confirmed a high degree of soft tissue fixation and no implant migration. The implant material submitted for light and electronmicroscopy showed extensive fibrovascular ingrowth throughout its matrix without encapsulation of the implant. Subsequent human use has shown good results in four patients followed for 2 years and an additional six patients followed for 1 year.