다공성 폴리에틸렌 안와삽입물 노출 환자에서 4직근 전방이동술의 효과

The Effect of 4 Rectus Muscle Anterior Displacement in Porous Polyethylene Orbital Implant Exposure

Purpose: To investigate the effects of anterior displacement of four rectus muscles in exposure of porous polyethylene orbital implant (Medpor?). Case summary: This retrospective study reviewed 4 eyes with exposed orbital implant who underwent evisceration with porous polyethylene orbital implant (Medpor?). The technique involves dissection of conjunctiva and tenon`s capsule and isolation of four rectus muscles from sclera. Unsure if each muscle was sutured to each other or if a group of muscles were sutured to another group (i.e. superior and inferior to medial and lateral). Posterior tenon`s capsule was closed interruptedly and conjunctiva was closed continuously. Orbital implant exposure was occurred at 2~36 months later after evisceration and implant insertion. One eye was noted wound dehiscence 1 week after operation, then re-suture was done. Re-exposure was notified in 1 eye at postoperative 3 months, but it was small, then we just observed. In other 3 cases, exposure was not identified till last follow up. Conclusions: Four rectus muscle anterior displacement procedure may be simple and useful method in exposure of orbital implant.