The present invention provides a method for the treatment of inflammatory diseases and/or conditions, e.g. allergic conjunctivitis, uveitis or phacoanaphylactic endophthalmitis in an eye of a mammal, said method comprising administering to said mammal in need of treatment a therapeutically effective amount of a novel cyclosporin A derivative selected from the group consisting of compounds represented by the formula: wherein R1 is S-Alk-R wherein Alk is an alkylene linkage, preferably a methylene or poly methylene linkage, or a polyalkenylene linkage, e.g. a C3 to C6 alkenylenyl linkage and R is a hydrogen or a unsubstituted or substituted hydrocarbyl group.