The invention relates to a device (1) for dispensing a mist of an ophthalmic fluid, comprising a discharge opening (25) for said mist, a mixing chamber (95) communicating with said discharge opening (25), an air chamber (58) for holding a volume of air, a first drive (61) operable to expel air from said air chamber (58), a fluid chamber (92) for holding a volume of the fluid to be dispensed and communicating with said mixing chamber (95), a second drive (82) for delivering a predetermined dose of said fluid to said fluid chamber (92) and configured for communicating with a supply of said fluid, such as a container (70), said air chamber (58) communicating with said fluid chamber (92) and separately with said mixing chamber (95), said device (1) being configured for establishing one flow of said expelled air flowing into said fluid chamber (92), so as to force said volume of liquid from said fluid chamber (92) into said mixing chamber (95), and another flow of said expelled air flowing past said fluid chamber (92) into said mixing chamber (95), for assisted atomizing of said fluid by said other flow of air striking said fluid driven into said mixing chamber (95).Linvention concerne un dispositif (1) permettant de diffuser un brouillard de fluide ophtalmique, et comprenant un orifice dévacuation (25) dudit brouillard, une chambre de mélange (95) communiquant avec ledit orifice dévacuation (25), une chambre dair (58) pour retenir un volume dair, un premier dispositif dentraînement (61) pouvant être actionné pour expulser lair de ladite chambre dair (58), une chambre de fluide (92) pour retenir un volume du fluide à diffuser et communiquant avec ladite chambre de mélange (95), un second dispositif dentraînement (82) pour distribuer une dose prédéterminée dudit fluide dans ladite chambre de fluide (92) et permettant de communiquer avec une alimentation dudit fluide, telle quun contenant (70), ladite chambre dair (58) communiquant avec ladite chambre de fluide (92) et de
