Can Forced Duction Test (FDT) Determine Surgical dose in Thyroid Eye Disease (TED)-Related Strabismus: A Case Series
Keywords:
forced duction test, strabismus, Thyroid Eye Disease, adjustable sutureAbstract
Objective: To evaluate the effectiveness of inferior rectus muscle test
Design: Case series
Participants: Eleven patients with restrictive vertical diplopia due to thyroid ophthalmopathy underwent inferior rectus recession and were followed for a minimum of 3 months after initial surgery
Intervention: All eleven patients underwent unilateral inferior rectus recession which using force duction test grading to determine surgical dose from 2021 to 2022 in Rajavithi hospital Main Outcome Measures: Post-operative alignment less than 10 PD and the absence of vision-threatening complications related to strabismus surgery is considered successful
Result: nine out of eleven patients (81.1%) achieved acceptable alignment with no vision-threatening complications
Conclusion: Surgical dose determined by force duction test grading alone gave satisfying success rate and may be a useful alternative in some patients who cannot tolerate adjustable-sutured method; however, further studies should be performed
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