Quantitative eye dropper and method of quantitative administration to the surface of the eye

摘要

An eyedropper (2) for administering a predetermined amount of liquid to the surface of an eye (57) is provided. The eye dropper (2) includes a body (104) having a nozzle (27) in fluid communication with the internal cavity (114) of the reservoir body (18). The protrusion from the inner surface (110) of the reservoir body (18) comprises a first protrusion (25a, 125a) having a first contact surface (26a, 126a) and a second protrusion And projections (25 b, 125 b). The first contact surface (26 a, 126 a) and the second contact surface (26 b, 126 b) are disposed opposite to each other and are separated from each other. In use, the first and second contact surfaces (26a, 26b, 126a, 126b) limit the displacement of the internal cavity (114) when the eye dropper (2) is squeezed, Limit the amount of liquid ejected.