High specificity of the pediatric vision scanner in a private pediatric primary care setting

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The Pediatric Vision Scanner (PVS) directly detects strabismus and amblyopia by analyzing binocular scans for birefringence that, due to the organization of the radially arranged Henle fibers, is characteristic of steady, bifoveal fixation. In a pediatric ophthalmology office setting,1 we found that the PVS had 97% sensitivity and 87% specificity for detection of strabismus and amblyopia. However, this study did not directly assess performance of the PVS in a primary care screening setting, where it is designed to be used. Here we report PVS specificity and positive likelihood ratio for a cohort of children screened in a pediatric primary care setting.