Comparison between motility of biointegratable and silicone orbital implants

Am J Ophthalmol. 2007 Apr;143(4):711-2. doi: 10.1016/j.ajo.2006.11.014. Epub 2006 Dec 15.


Purpose: To determine if there is a difference in motility between biointegratable orbital implants and silicone orbital implants in patients undergoing ocular evisceration.

Design: A retrospective comparative study.

Methods: We compared motility measuring the excursion of a mark on the conjunctiva at the center of the implant in eviscerated patients with silicone implants and biointegratable implants after same evisceration technique.

Results: Silicone implants had 0.5-mm increased movement in inferior and medial duction compared with biointegratable implants. The later had 0.1 mm of increased movement compared with silicone implants in lateral gaze. The greatest difference was in superior gaze, in which silicone implants had 1.5 mm more excursion than biointegratable implants. No significant difference was observed in horizontal and vertical movements between both groups.

Conclusions: In our analysis, there does not seem to be any advantage, in terms of motility, in using biointegratable implants if "pegging" is not planned. Further studies are required.

Publication types

  • Comparative Study

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Biocompatible Materials*
  • Eye Evisceration
  • Eye Movements / physiology*
  • Eye, Artificial*
  • Female
  • Humans
  • Male
  • Middle Aged
  • Orbital Implants*
  • Polyethylenes*
  • Prosthesis Implantation
  • Retrospective Studies
  • Silicone Elastomers*


  • Biocompatible Materials
  • Medpor
  • Polyethylenes
  • Silicone Elastomers