This invention includes a closure for covering a container. The closure has a base with an upper surface and a neck, with the neck capable of being fastened to the opening of a bottle. The upper surface sits above the opening of the bottle. It has a spout having an exposed front surface, a front inside surface, and a cap rim. The cap is pivotally attached to the base to permit movement of the cap relative to the base between an open position and a closed position. The exposed front surface and front inside surface together have a bottom end and a top end. The inside front surface contains a spout cap, such that when the cap is closed the spout cap mates with the spout to form a liquid tight seal, and such that when the cap is opened the liquid tight seal between the spout and the spout cap is opened.본 발명의 폐쇄구는 안과용 렌즈 용액을 수용하는 데 사용될 수 있으며, 이를 사용하는 방법이 제공된다.
