EE was looking in the shaft of Skyline, removed his safety glasses (dark) to get a better look. When pulling his head away from shaft, other EE standing on other side dropped his wrench which hit a can of Brakekleen lying on catwalk puncturing the can & spraying a mist into his eyes. He was taken to eyewash station (per MSDS), then to clinic where they flushed & released him.