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Timing of surgery for primary exotropia in children
W L Asjes-Tydeman1, H Groenewoud, G J van der Wilt
1Department of Orthoptics, Diaconessenhuis Meppel, Meppel, The Netherlands. w.asjes@home.nl
Insights
Early surgery for primary exotropia in children (< 7 years) leads to significantly better alignment and sensory outcomes compared to later surgery. This reduces the need for reoperations, improving long-term results.
Area of Science:
- Ophthalmology
- Pediatric Surgery
- Strabismus Research
Background:
- Primary exotropia is a common form of strabismus in children.
- The optimal age for surgical intervention in primary exotropia remains a subject of investigation.
- Understanding the impact of surgical timing on functional outcomes is crucial for pediatric eye care.
Purpose of the Study:
- To compare postoperative alignment and sensory functions in children with primary exotropia.
- To evaluate the effect of early (< 7 years) versus late (> 7 years) surgical intervention on outcomes.
- To identify correlations between age at surgery and postoperative results in primary exotropia patients.
Main Methods:
- Retrospective cohort study of 112 patients with primary exotropia.
- Patients divided into two groups: surgery before age 7 (n=24) and after age 7 (n=36).
- Analysis of age at surgery, preoperative alignment, sensory functions, and postoperative status with follow-up of at least one year.
Main Results:
- Children undergoing surgery before age seven demonstrated significantly better postoperative alignment and sensory functions.
- Age at surgery was a statistically significant predictor of motor outcome (exodeviation < 10 prism diopters), with earlier surgery yielding better results.
- The reoperation rate was significantly lower in the early surgery group (2 vs. 12).
Conclusions:
- Surgical intervention for primary exotropia before the age of seven years is associated with superior postoperative alignment and sensory functions.
- Early surgical timing appears to be a critical factor in achieving better long-term outcomes and reducing the need for subsequent procedures.
- These findings support early surgical management for primary exotropia to optimize functional recovery in pediatric patients.
Objective:
To compare postoperative alignment and sensory functions in children with primary exotropia who were operated at an early age (< 7 years) with patients who were operated at an older age (> 7 years).
Methods:
In a consecutive retrospective cohort study, 112 patients who had a surgical intervention for primary exotropia between 1997 and 2003 were evaluated for postoperative results. After applying criteria for eligibility, the group of patients was divided into two groups: those who had surgical intervention before the age of seven years (n = 24) and those who had surgery after the age of seven years (n = 36). Age at surgery, preoperative alignment and sensory functions were correlated with the postoperative status. The follow-up was at least one year (1.0 year to 7 years; median: 2.3 and 3.5 years, respectively).
Results:
Children who had surgery before the age of seven had significantly better alignment and sensory functions. The univariate logistic regression model confirmed a statistically significant association between motor outcome (exodeviation less than 10 prism-diopters) and age at the time of surgery (before or after the age of seven; p = 0.002). In the multivariate model, the association between age at time of surgery and motor outcome was even stronger. The number of reoperations in the group operated before the age of 7 years was significantly less than in the group operated after the age of seven (2 versus 12, p = 0.023).
Conclusion:
The postoperative alignment and sensory functions in patients with primary exotropia who had surgical intervention before the age of seven years were, in this study, better than in patients who had surgery after the age of seven years.
