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When is it safe to stop patching?
The British Journal of Ophthalmology
|December 1, 1990
Summary
Children older than three years are more likely to achieve stable vision after amblyopia (lazy eye) treatment with patching. Preverbal children often require continued maintenance patching for optimal visual outcomes.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Vision Science
Background:
- Amblyopia treatment often involves occlusion therapy (patching).
- Approximately 50% of successfully treated amblyopia patients require ongoing maintenance patching.
- Predictors for stable outcomes after primary occlusion are not well-defined.
Purpose of the Study:
- To identify clinical characteristics associated with a stable visual outcome after primary amblyopia occlusion therapy.
- To compare patients who achieved stable vision without further patching to those who required maintenance patching.
Main Methods:
- Retrospective study of 188 patients with amblyopia (strabismus, anisometropia, or media opacity).
- Inclusion criteria: age 2-119 months, successful primary occlusion, and ≥1 year follow-up.
- Exclusion criteria: non-compliance or failure to achieve equal vision.
Main Results:
- 47% (88 patients) achieved stable vision (Clinically Stable Group - CSG), while 53% (100 patients) required maintenance patching (MPG).
- CSG patients were older at the start (mean 33 months) and end (mean 40 months) of primary occlusion compared to MPG patients (means 26 and 31 months).
- Discontinuation of patching due to equal recognition acuities was more common in CSG, whereas equal fixation behavior/preferential looking was more common in MPG.
Conclusions:
- Patching for amblyopia can generally be discontinued after age three.
- Preverbal children are more likely to need maintenance patching.
- Continued follow-up is crucial for ensuring stable visual outcomes in all treated amblyopia patients.