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New Tool for Toddler Vision Testing

  • November 24, 2025

  • 5 min

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A team at the University of Waterloo has developed the Waterloo Differential Acuity Test (WatDAT), a tool for assessing recognition visual acuity (VA) in children as young as 18 months. This test offers a reliable method to detect amblyopia and visual deficits earlier than ever before, using a unique 'odd-one-out' task that does not require language skills. The WatDAT outperformed traditional tests, demonstrating superior testability and providing valuable data for pediatric eye care, with implications for commercialization and improved clinical practices.

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