Answer:

The patient presented here was experiencing an extruding hydroxyapetite implant. These small round structures consist of porous processed coral. The implant is placed in the orbit when the extraocular muscles have been retained. The muscles are attached to the implant and the eye slowly 'adopts' the implant, sending blood vessels, connective tissue, and other structures into the implant itself. The implant can then rotate just as the old eye did. A thin artificial eye 'shell' is made and sits upon the implant, giving the shell excellent cosmesis and mobility. Unfortunately, some patients experience extrusion of the implant, which can lead to complete loss of the implant itself. In the picture shown here, you can see the mottled, porous, surface of the implant very near the surface. Referral back to the original oculoplastic surgeon was made.

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