THE INVENTION RELATES TO A COATING FORMULATION FOR PREPARING A HYDROPHILIC COATING, WHEREIN THE HYDROPHILIC COATING FORMULATION COMPRISES A SUPPORTING MONOMER AND/OR POLYMER COMPRISING AT LEAST 2 REACTIVE MOIETIES CAPABLE OF UNDERGOING POLYMERIZATION REACTIONS, A POLYELECTROLYTE, A NORRISH TYPE I PHOTOINITIATOR, AND A NORRISH TYPE II PHOTOINITIATOR.