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[Model for cost-benefit relations of amblyopia screening]
J C Barry1, A Hartmann, U M Pongs
1Augenklinik, RWTH Aachen.
Summary
Field-based orthoptic and objective apparatus-based screenings are cost-effective alternatives for detecting amblyopia and microtropia in young children. These methods offer better economic outcomes than traditional practice-based examinations.
Area of Science:
- Ophthalmology
- Public Health
- Health Economics
Background:
- Amblyopia and microtropia affect many children, with current pediatric screening insufficient for early detection.
- Germany sees 750,000 births annually, necessitating effective visual defect screening in children aged 24-48 months.
Purpose of the Study:
- To evaluate the cost-effectiveness of alternative screening strategies for amblyopia and microtropia.
- To compare field-based orthoptic screening, apparatus-based screening, and practice-based examinations.
Main Methods:
- Cost-effectiveness analysis comparing three screening options: field orthoptic, apparatus-based, and practice-based examinations.
- Modeling costs for screening, follow-up, and treatment based on 1% (microtropia) and 5% (amblyopia) prevalences.
- Quantifying treatment benefits by avoided whole-person impairment (3% and 1%) and considering related income, tax, and healthcare payments.
Main Results:
- Orthoptic (1) and apparatus-based (2) screening options demonstrated favorable cost-effectiveness ratios.
- Practice-based ophthalmological examinations (3) were found to be economically less promising.
- Higher prevalences of visual defects correlated with increased cost-effectiveness of screening.
Conclusions:
- Alternative screening methods, specifically field-based orthoptic and apparatus-based approaches, are economically viable for amblyopia and microtropia detection.
- Current practice-based screening models are less cost-effective for widespread pediatric visual defect screening.
- The economic benefits of screening increase with higher disease prevalence.