Abstract
Orbital decompression was performed on 116 orbits with Graves' ophthalmopathy. The indications for decompression were dysthyroid optic neuropathy (DON), recalcitrant corneal exposure (EXP) and disfiguring exophthalmos (COS). All cases but one (in the DON group) had improved or unchanged vision. The average retinal sensitivity improvement in the DON group was 6.7 ± 6.1 dB and 85% had a significant retinal sensitivity improvement (>5 dB). The average retroplacement effect was 4.4 ± 2.1 mm and only five cases (7%) had postoperative asymmetry of more than 2 mm by Hertel's exophthalmometry. The most frequent sequela was diplopia, which tended to occur in more severely myopathic eyes. In our series, 21% (10/48 cases without preoperative diplopia) developed diplopia after decompressive surgery. Hypoglobus is another complication, noted in two cases, which was successfully repositioned. In conclusion, decompressive surgery is a safe and effective procedure to restore vision and reduce exophthalmos in Graves' ophthalmopathy. Careful evaluation of clinical parameters, individualization of surgical goals and intraoperative titration of the retroplacement effect are the key to optimal results.
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