On the EO-18/NASA 1/Soyuz TM-21 mission, astronaut Norman E. Thagard suffered an eye injury: "He was doing deep knee-bends, using a device with elastic straps, when one end of a strap slipped off his foot and flew up and hit him hard in the right eye." https://history.nasa.gov/SP-4225/nasa1/nasa1.htm
