Dear Gale, 

I am sorry to hear about your situation.  It is extremely unusual for a Bio-eye hydroxyapatite implant to be removed, especially if it is vascularized.  However, yours must have been vascularized because otherwise peg placement is not recommended.

The Medpor implant is a porous polyethylene plastic implant.  It is considered a less desirable implant material because it is synthetic.  Its only current advantage is that it is less costly than the Bio-eye implant.  Most patients and in some cases ophthalmologist are not aware that the pores in the Medpor implant are not all interconnected as they are in the Bio-eye implant and Medpor does not completely vascularize.  Therefore, I do not believe it is appropriate to place a peg in it.

The hydroxyapatite is the best material available today because it is a natural material in the body.

I would recommend that you have it has a secondary implant with your muscles attached to it to give you the best movement.

Best regards,

Art Perry, MD

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