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To the Editor:
—I read with some interest the article by Cogan and Kuwabara "Orbital Reaction to Sponge (Ivalon) Implant," Arch. Ophthal. 65:646, 1961. In the past 3 years, we have performed 32 enucleations and 3 eviscerations in which Ivalon was used as the implant.In reviewing our results several months ago, it was found that 12 (37%) of the implants had become exposed and required either complete removal or partial excision with repeat closure, and on occasion another repeat partial excision.Of the 3 eviscerations (Burch's type), one eroded through the cornea and also the sclera superiorly after a period of 6 months.Of 10 plastic ball implants into Tenon's capsule, we have had no extrusions or exposures.We have, of course, ceased to use Ivalon as a prosthetic material and agree whole-heartedly with your statement, "Ivalon clearly cannot be considered an inert material."
Coyle JT. IVALON IMPLANTS. Arch Ophthalmol. 1961;66(5):762–763. doi:https://doi.org/10.1001/archopht.1961.00960010764024
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