Portable safety side shields made from a flexible plastic that will slip onto a wide variety of eyeglasses. An eyeglass temple piece is weaved through slots in the side of a side shield for attachment to the wearer's temple. The slots in the side shield are long enough to allow attachment to eyeglasses with different pantoscopic angles. The side shield overlaps the front portion of an eyeglass frame, sealing the side shield against the eyeglass frame and preventing the side shield from sliding backward.