[PROBLEMS] To instill a necessary amount of ophthalmic solution at the time of instillation, to prevent the ophthalmic solution from spilling from the conjunctival sac, and to prevent contamination of foreign substances in the ophthalmic solution in an ophthalmic container and propagation of microorganisms such as bacteria. To provide an eye drop container attachment and an eye drop container. A base 10 having a first ophthalmic solution storage unit fixed to the discharge unit and capable of storing a first amount of ophthalmic solution, and provided on a downstream side in a direction in which the ophthalmic solution flows out from the discharge port. A first tip 30 having a second eye drop reservoir 301 capable of communicating with the one eye drop reservoir and storing a second amount of the eye drop as a droplet； and a first eye drop reservoir. Reverse that causes the ophthalmic solution to circulate from the ophthalmic solution storage unit to the second ophthalmic solution storage unit 301 and prevents backflow of the ophthalmic solution from the second ophthalmic solution storage unit 301 to the discharge port of the ophthalmic container in the first ophthalmic solution storage unit. An ophthalmic container attachment 1 comprising a stop valve. [Selection] Figure 1【課題】点眼時に必要量の点眼液を点眼することができ、点眼液が結膜嚢からこぼれることを防止し、点眼容器内の点眼液における異物の混入や細菌などの微生物の繁殖を抑えることができる点眼容器アタッチメント、及び、点眼容器を提供すること。【解決手段】吐出部に固定され、第１の量の点眼液を貯留可能な第１点眼液貯留部を有する基部１０と、点眼液が吐出口から流出する方向における下流側に設けられ、第１点眼液貯留部に連通可能であり第２の量の点眼液を液滴として貯留可能な第２点眼液貯留部３０１を有する先端部３０と、第１点眼液貯留部に設けられ、第１点眼液貯留部から第２点眼液貯留部３０１へ点眼液を流通させ、第１点眼液貯留部における点眼容器の吐出口への第２点眼液貯留部３０１からの点眼液の逆流を阻止する逆止弁と、を備える点眼容器アタッチメント１である。【選択図】図１
