Within the last few decades, in response to the advent of potent and versatile therapeutic agents, the diversity of conventional ophthalmic formulations has gradually evolved, extending well beyond simple solutions, and now includes a variety of types of drug administration. In most recent publications, authors have broadened the notion of conventional ophthalmic delivery systems to encompass more than simple solutions and suspensions [1]. While not strictly conventional , the ready availability of several commonly used drug vehicles suggests they have achieved acceptance, have been elevated to the category of conventional, and will be considered in this comparison.In this article, I have summarized the types of commonly used ophthalmic formulations, indicated the generality of their applicability and acceptance, differentiated their characteristics and utility, and projected anticipated use and development in the decade to come. This should also serve to put into perspective the discussions of more sophisticated components and elaborations described in this issue.