Provided here are new ophthalmologically suitable pharmaceutical compositions comprising an effective amount of a moxifloxacin compound and an effective amount of a triamcinolone compound in suspension, wherein the particles of the suspension are limited in size. In aspects, the compositions are stable suspensions, maintaining physical stability and chemical stability for extended periods of time (e.g., exhibiting no sustained flocculation, coagulation, or clumping after several months of storage under typical storage conditions). In aspects, the compositions include a suspension component comprising one or more suspension agents. In aspects, the suspension component includes an ionic suspension agent. In aspects, the composition also or alternatively comprises a non-ionic surfactant, non-ionic suspension agent, or both, or an agent providing both functions. In aspects, such compositions further comprise an effective amount of a chelating agent/component. Further described are related compositions and methods of making and using such compositions, e.g., in the treatment of eye infections.