Rationale of the work was to improve the pre-corneal residence time, and sustain the drug release by utilizing the approach of in-situ gelling systems using various polymers. The main objective of the work was to formulate and evaluate in-situ ocular gelling systems(pH induced) for the delivery of Ketorolac tromethamine for treating allergic conjunctivitis. In conclusion it was stated that the objective of the study was met. The in-situ gel forming system could have good patient acceptance because... Mehr