Related Experiment Video
Updated: Jun 19, 2026
Surgical Correction for Pediatric Epiblepharon and Trichiasis
Published on: July 8, 2025
Outcome study of unilateral lateral rectus recession for small to moderate angle intermittent exotropia in children
1Department of Pediatric Ophthalmology and Strabismus, Wills Eye Institute, Philadelphia, Pennsylvania 19107, USA.
Insights
Unilateral lateral rectus recession effectively treats intermittent exotropia in children. This surgical approach for small to moderate exodeviation achieved high success rates, with long-term alignment in most patients.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Strabismus Surgery
Background:
- Intermittent exotropia is a common strabismus condition in children.
- Surgical management aims to restore binocular vision and prevent amblyopia.
- Unilateral rectus recession is a standard surgical technique for exodeviation.
Purpose of the Study:
- To evaluate the outcomes of unilateral lateral rectus recession in children with intermittent exotropia.
- To assess the success rate and factors influencing the outcome of this surgical procedure.
- To determine the long-term efficacy of the treatment in achieving successful alignment.
Main Methods:
- Retrospective review of 100 children younger than 15 years with intermittent exotropia.
- Unilateral lateral rectus recession (7-10 mm) for exodeviation (15-35 PD).
- Successful alignment defined as ≤5 PD exodeviation and absence of esotropia at final follow-up.
Main Results:
- 99% initial success, 88% at 6 months, and 76% at final follow-up.
- Initial exodeviation amount significantly correlated with final success (P = .041).
- 89% overall success with primary and secondary surgeries combined.
Conclusions:
- Unilateral lateral rectus recession is a safe and effective treatment for pediatric intermittent exotropia.
- The surgical outcome is influenced by the initial degree of exodeviation.
- This procedure offers a high rate of successful alignment for small to moderate angle exotropia.
Purpose:
To report an outcome study of 100 consecutive children with intermittent exotropia treated by unilateral rectus recession for small to moderate angle exodeviation with a minimum follow-up of 6 months.
Methods:
The records of patients with intermittent exotropia younger than 15 years who underwent 7-to-10-mm unilateral lateral rectus recession for exodeviation measuring 15 to 35 prism diopters (PD) from January 2000 to July 2008 were retrospectively reviewed. The surgery were performed accordingly to the amount of distance deviation. A successful alignment was defined as an exodeviation of 5 PD or less and absence of any esotropia in primary and lateral gaze while viewing distant or near targets.
Results:
Successful alignment was achieved in 99%, 88%, and 76% of patients at early postoperative, 6-month, and final follow-up, respectively. One overcorrected patient had an esodeviation of 20 PD at 6 months. The results of the final follow-up did not depend on age or refraction at the level of 0.05, whereas the amount of initial exodeviation was found to be significantly correlated with success at the final examination (P = .041). There was a positive significant relationship between results at 6 months and final follow-up (P = .000, r = 0.449). Eleven of the 13 patients who had a second surgery and were observed more than 6 months had successful alignment. Eighty-nine percent of the patients achieved a successful outcome with the combined primary and secondary surgery at the final follow-up.
Conclusion:
Unilateral lateral rectus recession is a safe and effective treatment for small to moderate angle intermittent exotropia in children.
