Re: ‘Long-term surgical outcomes of porous polyethylene orbital implants: a review of 314 cases’

The fibrovascularisation of porous polyethylene implant is delayed and incomplete as compared with hydroxyapatite, even after many weeks. [...]the surface of porous polyethylene implant can continue to cause abrasion of overlying conjunctiva with eye movements. Few other studies 1-3 where unwrapped implant was used also found greater fornix shortening as compared with wrapped implant. [...]wrapping of implant prevents exposure and may prevent against the erosion of overlying Tenon's and conjunctiva and, thus, reduces the chances of fornix contraction.