Screening for refractive errors in preschool children with the vision screener

Area of Science:

• Ophthalmology
• Pediatric Optometry
• Vision Science

Background:

• Amblyogenic refractive errors pose a significant risk to visual development in children.
• Early detection is crucial for effective intervention and preventing long-term vision impairment.
• The Vision Screener, a commercial version of the Power Refractor, is a novel tool for refractive error screening.

Purpose of the Study:

• To assess the measurement reproducibility of the Vision Screener.
• To compare Vision Screener measurements with cycloplegic refraction.
• To evaluate the sensitivity and specificity of the Vision Screener in detecting amblyogenic refractive errors.

Main Methods:

• 161 preschool children (0.5-7.2 years) without strabismus underwent three Vision Screener measurements.
• Cycloplegic refraction was performed after non-cycloplegic measurements.
• The impact of +3 dpt glasses on screening accuracy was analyzed.

Main Results:

• Vision Screener measurements demonstrated high reproducibility (+/- 0.5 dpt in 85% of children).
• Accommodation affected hyperopia measurements by up to 3 dpt.
• The use of +3 dpt glasses improved sensitivity (70% to 80%) but reduced specificity (80% to 65%).

Conclusions:

• The Vision Screener provides reproducible results and is user-friendly for refractive error screening.
• Sensitivity and specificity for detecting amblyogenic refractive errors range from 70% to 80%.
• +3 dpt glasses showed limited benefit in this study population.