A visual-training app measurably improved baseball players’ dynamic visual acuity

Evidence

In 2014, Dr. Aaron Seitz, a neuroscientist at University of California, Riverside, developed a visual training app called ULTIMEYES and tested it on university baseball players. The app, which specifically addressed dynamic visual acuity—the ability to make out the fine details of moving objects—seemed to have a positive overall effect on players’ performance. In a Q&A on Reddit, Seitz noted that poor vision comes from a mix of two things: actual ocular impairments and brain-based impairments. Clearly, the former would require medical intervention; it was the latter that the program aimed to improve. — Jenny Odell, How to Do Nothing, 388

Categorization

Category: Factual Claims

• QUESTION: Worth chasing: is Seitz’s finding robust beyond the app’s own promotional data? A skeptical reader would want the actual effect size.