Bilateral recession of the inferior rectus muscles in patients with Graves orbitopathy results in a shift of vertical duction range toward upgaze and a significant decrease of excyclodeviation. Overcorrection of cyclodeviation in downgaze has to be considered before planning this type of surgery. Poor preoperative elevation contributes to higher dose-effect responses. Considering all variables, the orthoptic picture does not change after 3 months of surgery.

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