The present invention is aimed at providing a drainage device that can be efficiently discharged to the eyelids the liquid that has accumulated in the eyelid fissure. A The drainage device 1 includes a main body 11 which the distal end portion 111B is composed of two side wall members 111 formed in a shape bent downward, and a connecting portion 12 connecting the side wall members 111 . Body portion 11 of the drainage device 1, in a manner that the inner side surface 111a between the side wall members 111 the upper end to each other at a distance d, and adjacent the adjacent side wall member 111 is opposed to the connecting portion 12 each side wall member than to the coupling 111 to a parallel state, the drainage path R for discharging the liquid between the adjacent side wall member 111 is formed. Therefore, since the inflow area S1 and the passage area S2 of the liquid of the liquid exhaust path R is large, it can be made to flow and pass through a large amount of liquid between the side wall member 111. [Selection Figure] Figure 1【課題】本発明は、瞼裂内に貯留した液体を瞼裂外に効率的に排出することができる排液器を提供することを目的とする。【解決手段】本排液器1は、先端部111Bが下方に屈曲する形状に形成された2枚の側壁部材111からなる本体部11と、該側壁部材111を連結する連結部12とを備える。本排液器1の本体部11は、隣り合う側壁部材111の上端部同士が距離dを隔て、かつ隣り合う側壁部材111の内側側面111a同士が対向する態様で、連結部12が各側壁部材111を並列状態に連結することより、隣り合う側壁部材111の間に液体を排出するための排液路Rが形成される。このため、該排液路Rに係る液体の流入面積S1と通過面積S2が大きくなるため、各側壁部材111間に多量の液体を流入および通過させることができる。【選択図】図1