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Updated: Jul 27, 2026

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Endoscopic Septoplasty with Limited Two-line Resection: Minimally Invasive Surgery for Septal Deviation
Published on: June 20, 2018
Outcomes from surgical treatment for dissociated horizontal deviation.
M E Wilson1, A K Hutchinson, R A Saunders
1N. Edgar Miles Center for Pediatric Ophthalmology, Storm Eye Institute, Medical University of South Carolina, Charleston, South Carolina 29425-2236, USA. wilsonme@musc.edu
Summary
Surgery for dissociated horizontal deviation (DHD) can be effective, with most patients achieving alignment after one operation. Unilateral lateral rectus recession often suffices for manifest DHD, though bilateral surgery may be needed for complex cases.
Area of Science:
- Ophthalmology
- Strabismus Surgery
Background:
- Dissociated horizontal deviation (DHD) management lacks extensive long-term data.
- Surgical outcomes for DHD require further investigation.
Purpose of the Study:
- To evaluate long-term surgical results for DHD.
- To provide recommendations for DHD surgical planning.
Main Methods:
- Retrospective review of 33 patients undergoing DHD surgery (1991-1997).
- Data collected: age, diagnosis, surgical history, DHD amount, concomitant deviations, amblyopia, surgery type, and alignment.
Main Results:
- 78% of patients required one surgery; 22% needed two or more.
- 75% had prior congenital esotropia surgery.
- Exotropia (XT) with DHD frequently necessitated bilateral surgery.
Conclusions:
- A tailored surgical approach is crucial for prominent DHD.
- Unilateral lateral rectus recession is often sufficient for manifest DHD.
- Bilateral surgery may be required for bilateral DHD or coexisting XT.

