Optrex Multi Action Eye Wash (100ml). Optrex Multi Action Eye Wash works by washing away particles such as pollen, dust, grit and smoke to cleanse the eye.  Its formula, which contains natural plant extract, also soothes tired and treats sensitive eyes.. For tired, uncomfortable, irritated eyes.. Washes, soothes, and cleanses with flexiseal eye bath. This flexiseal eye bath is specifically designed to fit comfortably against the eye to help prevent leakage.. Contains natural plant extracts.. Specially designed to fit comfortably against the eye to helping prevent leakage.