Silicone sponge has been used for implantations, including prosthetic heart valves,1 facial reconstruction,2 and mammary augmentation.3 This investigation concerns its use in eviscerations. The following characteristics of this material were felt desirable: (1) resiliency, to minimize corneal erosion due to pressure points between the implant and the overlying prosthesis, (2) lightness, to minimize migration, (3) minimal foreign body or antigenic properties, (4) chemical stability against eventual disintegration, and (5) ability to withstand autoclaving.
The "blind-pore" form of sponge was chosen because of its resistance to deep fibroblastic penetration and subsequent hardening with collagen.
An evisceration was performed on one eye of each of five adult albino rabbits, through a scleral incision, concentric with the cornea and behind the insertion stump of the detached superior rectus muscle. An autoclaved 13 mm sphere of the sponge * was inserted and the sclera closed with supramyd suture. The muscle was
HARGISS JL. Silicone Sponge Implants. Arch Ophthalmol. 1965;74(4):527. doi:10.1001/archopht.1965.00970040529016