This review focused on the best evidence available on the use of PSVS to detect vision conditions in asymptomatic preschool children (aged from birth to 6 years; not necessarily considered at risk for developing visual impairment) to determine the safety and efficacy / effectiveness of PSVS, compare the safety and effectiveness of universal and targeted PSVS, and to determine the best practice for conducting PSVS, as well as to assess the cost-effectiveness of various strategies used in the screening of preschool vision.
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