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Ophthal Plast Reconstr Surg. 2011 Jan-Feb;27(1):4-11. doi: 10.1097/IOP.0b013e3181df6a87.

Comparison of lateral and medial orbital decompression for the treatment of compressive optic neuropathy in thyroid eye disease.

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1
Department of Ophthalmology and Visual Sciences, University of Michigan Kellogg Eye Center, Ann Arbor, Michigan, USA.

Abstract

PURPOSE:

To compare the efficacy of lateral orbital decompression with medial orbital decompression for the treatment of compressive optic neuropathy (CON) caused by thyroid eye disease (TED).

METHODS:

A retrospective review of all patients undergoing orbital decompression for TED-associated CON between 2003 and 2008 was conducted. Clinical outcome measures included visual acuity, mean deviation on Humphrey visual field, Ishihara color plate testing, afferent pupillary defect, and Hertel exophthalmometry. A composite CON score was also calculated for each patient based on the 3 visual outcome measures, with a higher CON score reflecting greater disease severity.

RESULTS:

Twenty-eight eyes of 17 patients were included in the study. Ten orbits underwent lateral wall decompression, and 18 orbits underwent medial decompression. Both groups showed a significant postoperative improvement in visual acuity, Humphrey visual field testing, and color testing at 3 months following the initial surgery. The composite CON score improved 9.04 ± 9.97 points after lateral decompression (p = 0.02) and 9.03 ± 10.84 points after medial decompression (p = 0.003). There was no significant difference in the degree of improvement in any of the visual outcome measures between the lateral and medial groups. There was a statistically significant difference in the amount of proptosis reduction resulting from lateral decompression compared with medial decompression (6.3 versus 3.1 mm, respectively, p < 0.0001).

CONCLUSIONS:

Lateral orbital decompression and medial orbital decompression are both efficacious for the treatment of TED-associated CON. Lateral decompression also results in a greater proptosis reduction than medial decompression.

PMID:
20736873
DOI:
10.1097/IOP.0b013e3181df6a87
[Indexed for MEDLINE]
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