الحول الخارجي المتقطع: عندما لم يحقق العلاج غير الجراحي تحكمًا كافيًا في الاندماج

References

DOI: 10.1016/j.ophtha.2022.11.002

Childhood-onset exotropia is typically intermittent and usually appears before 3 years of age, but it may be first detected later in childhood.

Surgical intervention is considered if the exodeviation is constant, if it occurs so frequently or is so large as to be unacceptable to the child or parent/caregiver, or if symptoms are not relieved by corrective lenses and nonsurgical treatment.

Surgery consists of bilateral-lateral rectus-muscle recessions or unilateral-lateral rectus-muscle recession and medial rectus-muscle strengthening.

Chemodenervation by injection of botulinum toxin into one or more extraocular muscles has been used as initial, secondary, and adjunctive treatment for exotropia.

Although approximately 80% of patients have good alignment 6 months postoperatively after bilateral-lateral rectus-muscle recession, long-term results are less favorable and recurrence is common over time.

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