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Chronic Implantation of Multiple Flexible Polymer Electrode Arrays
Published on: October 4, 2019
Primary peg placement in evisceration with the spherical porous polyethylene orbital implant
Hatem A Tawfik1, Jonathan J Dutton
1Department of Ophthalmology, Ain-Shams University, Cairo, Egypt. hatem35@yahoo.com
Purpose:
To determine the efficacy of primary placement of a motility coupling post (MCP) in evisceration with the porous polyethylene (PP) implant.
Design:
Retrospective noncomparative, interventional case series.
Participants:
Twenty patients undergoing evisceration.
Methods:
A modified evisceration technique with porous polyethylene implants was performed, in which an MCP was placed primarily during the initial surgery. All patients were observed postoperatively for a minimum of 3 months.
Main Outcome Measures:
Socket motility, final position of the MCP in the orbit, patient satisfaction.
Results:
At the last follow-up visit, an acceptable range of motility was attained in all patients. Nineteen patients had a centrally positioned MCP, and all patients were pleased with the cosmetic outcome and the range of motility achieved. Minor complications were noted, including a malpositioned MCP (n = 1) and poor motility in upgaze (n = 8).
Conclusions:
Primary peg placement at the time of evisceration with the PP implant is a promising technique with relatively minor complications so far, but properly constructed studies are required prospectively to compare motility with the MCP versus nonpegged implants.

