A marker device for producing paint marks on an eye is disclosed. The marker device comprises: a handling unit and a marker unit coupled to the handling unit for rotation with respect to the handling unit about a rotational axis, the marker unit including a plurality of at least two spaced apart marking surfaces and having a rotationally symmetric distribution of weight with respect to the rotational axis, wherein the coupling between the handling unit and the marker unit permits the marker unit to rotate, due to gravity, relative to the handling unit into an equilibrium position.揭示了一種用於在一眼睛上產生塗料標記之標記裝置。該標記裝置包括:一操縱單元;及一標記單元,該標記單元耦接至該操縱單元以繞著一旋轉軸相對於該操縱單元旋轉,該標記單元包括複數個至少兩個間隔開之標記表面且相對於該旋轉軸具有一旋轉對稱之重量分佈,其中該操縱單元與該標記單元之間的該耦接准許該標記單元歸因於重力而相對於該操縱單元旋轉至一平衡位置。10‧‧‧標記裝置12‧‧‧操縱單元14‧‧‧標記單元16‧‧‧標記表面18‧‧‧操縱棒22‧‧‧額外重量24‧‧‧主體
