This document discusses various ophthalmic products including eye drops, contact lens solutions, eye lotions, eye ointments, and eye suspensions. It provides details on the formulation, essential characteristics, and components of each type of product. Eye drops are aqueous or oily solutions or suspensions of drugs meant for instillation into the eye. Contact lens solutions are used for cleaning, soaking, and storing contact lenses. Eye lotions are aqueous solutions used for washing the eyes. Eye ointments are sterile semisolid preparations applied to the eye in collapsible tubes. Eye suspensions contain insoluble drugs suspended in a vehicle for sustained drug release. All ophthalmic products must be sterile, isotonic, and formulated to minimize irritation