Linda Du, an assistant clinical professor at the University of Missouri–St. Louis College of Optometry, administered an eye-opening exam in the vision therapy room at the Patient Care Center on South Campus. The room was made possible through a generous gift from the Marco Family Foundation and Marco Ophthalmic, Inc. The slow-moving Marsden ball helps patients improve their eye tracking skills by pointing to letters on the ball.

This photograph was taken by UMSL photographer August Jennewein and is the latest to be featured in Eye on UMSL.