Methods of preparing ophthalmic formulations and uses of same

The present invention relates to a process for preparing an ointment comprising subjecting a mixture of a fluorescent molecular rotor compound, mineral oil, and grinding media to ball milling agitation and combining this mixture with a hydrophobic vehicle for an ointment. The invention also relates to an ophthalmic formulation comprising a pharmaceutically acceptable carrier and a compound of the following structural Formula (I), or a pharmaceutically acceptable salt thereof: Values and preferred values of the variables in structural Formula (I) are described herein.