Korean J Ophthalmol > Volume 19(4); 2005 > Article
Korean Journal of Ophthalmology 2005;19(4):247-251.
DOI: https://doi.org/10.3341/kjo.2005.19.4.247    Published online December 30, 2005.
Polytetrafluoroethylene as a Spacer Graft for the Correction of Lower Eyelid Retraction.
Yong Jae Lee, Sang In Khwarg
1Department of Ophthalmology, College of Medicine, University of Ulsan, Asan Medical Center, Seoul, Korea.
2Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea. khwarg@snu.ac.kr
3Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea.
Abstract
PURPOSE
To evaluate the efficacy of porous expanded polytetrafluoroethylene (e-PTFE, Goretex (R) ) containing large pores made with a 21-gauge needle as a graft for the correction of lower lid retraction. METHODS: e-PTFE grafts were implanted between the tarsus and lower lid retractor via a transconjunctival approach with/without amniotic membrane transplantation, or via a transcutaneous approach. Rabbits were examined and assessed for corneal and conjunctival complications and for e-PTFE graft status. Rabbits were sacrificed for a histological study at 8 weeks postoperatively. RESULTS: e-PTFE grafts were uniformly extruded 3 weeks postoperatively in eyelids operated on via the transconjunctival approach. However, rabbits operated on via the transcutaneous approach demonstrated e-PTFE graft retention; in addition, dense fibrovascular ingrowths into the large pores of e-PTFE were observed histologically. CONCLUSIONS: e-PTFE is a good substitute for other graft materials as a spacer in lower lid retraction operations, especially as an interpositional graft using a transcutaneous approach.
Key Words: Expanded polytetrafluoroethylene (e-PTFE);Lower lid retraction;Lower lid retraction repair


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