PURPOSE:: To compare outcomes of lower eyelid retraction repair with 3 types of spacer grafts: autologous auricular cartilage, bovine acellular dermal matrix (Surgimend, Integra, Plainsboro, NJ), porcine acellular dermal matrix (Enduragen, Stryker, Kalamazoo, MI). METHODS:: A prospective, randomized clinical trial was conducted in patients undergoing lower eyelid retraction repair with spacer graft. Subjects received autologous auricular cartilage, bovine acellular dermal matrix, or porcine acellular dermal matrix between June 2015 and July 2016. Patient demographics, margin to reflex distance 2, conjunctival injection, eyelid swelling, tearing, discomfort, itching, and complications were recorded preoperatively and at postoperative week 1, month 1, month 3, and month 6. RESULTS:: Of the 49 randomized lower eyelids (39 patients), 42 eyelids (32 patients) completed the study. The preoperative margin to reflex distance 2, conjunctival injection, eyelid swelling, tearing, discomfort, and itching showed no statistical difference. Postoperative week 1 swelling was statistically significantly higher in auricular cartilage, followed by bovine acellular dermal matrix, then porcine acellular dermal matrix (p = 0.04). The mean postoperative month 6 margin to reflex distance 2 trended toward a better outcome from auricular cartilage over bovine acellular dermal matrix (p = 0.029), but after p was adjusted for multiple pairwise comparisons, this was no longer statistically significant (p = 0.088). All other postoperative 6-month measurements showed no statistical difference. CONCLUSIONS:: Among patients randomized to 3 types of spacer grafts for lower eyelid retraction repair, outcomes were not statistically significant different when the 3 groups were compared.
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