Clinical outcomes of 3-dimensional printed custom porous polyethylene orbital implant for reconstruction

Purpose: To report the clinical outcomes with three-dimensional (3D)-printed custom orbital implants, designed using contralateral orbit mirroring techniques. Methods: Case series of 3D-printed custom orbital implants used for complex orbital reconstructions at University of Michigan Kellogg Eye Center is presented in this study. Data from 2020 to 2023 was collected. Results: In this case series of 8 patients, the surgical indications include diplopia, enophthalmos, hypoglobus either post-trauma or tumor removal. One patient had bilateral defects; others had unilateral defects. The mean follow-up time was 27.88 +/- 9.66 months (Range: 7-38 months). Postoperative improvement was seen for enophthalmos in 7 of 8 cases, hypoglobus in 3 of 5 cases, and diplopia in 3 of 4 cases, and the average exophthalmometry asymmetry improved from 3.1 mm to 0.5 mm. Conclusions: 3D-printed orbital implants demonstrated effectiveness and safety in this diverse series of orbital reconstruction cases, yielding significant clinical improvements. Our findings support the use of these implants in a variety of complex orbital reconstructions.