Abstract: The eye is effectively treated by providing it with formulations including uncoated cationically charged microparticles of reversed cubic phase or reversed hexagonal phase material. The treatment methods are effective; for a variety of diseases and conditions including dry eye. The structure, charge and components of the microparticles in dispersion, with or without an active ingredient, provide mucoadhesion, layering, protection and prolonged duration of ophthalmic action.

Abstract: Drug formulations that provide sustained action and/or reduced dosage requirements are provided. In the formulations the drugs (particularly local anesthetics) are associated with reversed cubic phase and reversed hexagonal phase lyotropic liquid crystalline material.